Stiffler's Seat Extender Rails + Corbeau Low Profile seat bracket:
Well, boys, I'm 6'4, and the added height from the LMR seat extenders I used to have that look like this
... worked just fine in Black Jack with stock seats. However, when I installed Corbeau GTS II seats in post #331, which are also well-known to raise height an inch higher, it felt uncomfortably high, and put my helmet into the ceiling on auto-x days. This is why a lot of folks have the cushions shaved 1/2-1" to compensate. However, recently, Stiffler's released a new seat extender that caught my attention when ads claimed that it dropped ride-height by 5/8". This, which I now believe is a dubious claim for reasons I'll demonstrate in this post, is language that seems to have been removed from Stiffler's ad linked above, but can still currently be found on resales sites, like:
Lethal:
Beefcake:
So, I put my order in for both 1 set of the $99 extenders and 1 low-profile Corbeau seat bracket ($139). Tonight/tomorrow, I'll try to figure how to install it, along with being hopeful of restoring my emergency brake cable, in one operation. That said, I'm scratching my head on the supposed height drop. I took some pictures to explain why:
First, the good news, the front seat bracket mounting point does drop, though only something like 1/2", possibly slightly less:
However, the rear mounting point (more aligned with your spine) is ~1.25" HIGHER
What kinda sucks about this is that the Corbeau braket now does this:
Look at the rear mount area and see how badly angled it is. This isn't something I can just add spacers up front to fix, because this is how much the front would need to come up to flatten the mating surfaces:
So, with the rear mount flat, the front mount is a couple inches above the studs.
Now, if the corbeau bracket was any lower in the back, the rear stud would interfere. However, there may be something I could do, if I can find a welder out here, and I've indicated where-ish with red arrows in the pic above. If ya took a little more off of the vertical part of the mount than the horizontal, you could induce a forward tilt & simultaneously drop the rear slightly more. I think this is what Stifflers should have done in the first place & I don't understand their thinking in raising the back so much. Hell, it almost looks like they could have re-angled the lower bar, and brought the rear mount down to it:
It's not all bad... I have kinda noticed that the corbeau seats with the standard height bracket is a little high towards the knees. So, some tilt forward would be welcome, but this much seems extreme.
Tri-Ax alternative:
While shopping the extension & seat bracket, I remembered appreciating how the tri-ax helped reduce the reach for the shifter. I appreciated that until I broke it in post #283. So, knowing that the shorty Pro5.0 handle is a bit of a reach when my seat position is just right, I took a look, and found this from none other than Pro5.0. It's solid steel, and will hopefully hold on a little better. Not clear in the pic, but it also leans a bit left, which brings it a little closer to the driver. I'm looking forward to trying it out. It's a nice looking piece, though it'll be covered up by the boot in my case. It definitely comes back further and will be, I suspect, in a more comfy position than anything I've used, to date.
New windshield:
I kinda haven't liked the aftermarket windshield that's been on Black Jack since I got it in NJ in 2014. I read a few threads and realized how hard it used to be to get a high quality Carlite OEM replacement, and also figuring out that I could pick one up in Charlotte, just 2 hours from my house for $200, I drove over and got one. Paid a local company to come out and install. It's pretty nice not lookin' through pitted imperfect glass for a change.
Well, boys, I'm 6'4, and the added height from the LMR seat extenders I used to have that look like this
... worked just fine in Black Jack with stock seats. However, when I installed Corbeau GTS II seats in post #331, which are also well-known to raise height an inch higher, it felt uncomfortably high, and put my helmet into the ceiling on auto-x days. This is why a lot of folks have the cushions shaved 1/2-1" to compensate. However, recently, Stiffler's released a new seat extender that caught my attention when ads claimed that it dropped ride-height by 5/8". This, which I now believe is a dubious claim for reasons I'll demonstrate in this post, is language that seems to have been removed from Stiffler's ad linked above, but can still currently be found on resales sites, like:
Lethal:
Beefcake:
So, I put my order in for both 1 set of the $99 extenders and 1 low-profile Corbeau seat bracket ($139). Tonight/tomorrow, I'll try to figure how to install it, along with being hopeful of restoring my emergency brake cable, in one operation. That said, I'm scratching my head on the supposed height drop. I took some pictures to explain why:
First, the good news, the front seat bracket mounting point does drop, though only something like 1/2", possibly slightly less:
However, the rear mounting point (more aligned with your spine) is ~1.25" HIGHER

What kinda sucks about this is that the Corbeau braket now does this:
Look at the rear mount area and see how badly angled it is. This isn't something I can just add spacers up front to fix, because this is how much the front would need to come up to flatten the mating surfaces:
So, with the rear mount flat, the front mount is a couple inches above the studs.
Now, if the corbeau bracket was any lower in the back, the rear stud would interfere. However, there may be something I could do, if I can find a welder out here, and I've indicated where-ish with red arrows in the pic above. If ya took a little more off of the vertical part of the mount than the horizontal, you could induce a forward tilt & simultaneously drop the rear slightly more. I think this is what Stifflers should have done in the first place & I don't understand their thinking in raising the back so much. Hell, it almost looks like they could have re-angled the lower bar, and brought the rear mount down to it:
It's not all bad... I have kinda noticed that the corbeau seats with the standard height bracket is a little high towards the knees. So, some tilt forward would be welcome, but this much seems extreme.
Tri-Ax alternative:
While shopping the extension & seat bracket, I remembered appreciating how the tri-ax helped reduce the reach for the shifter. I appreciated that until I broke it in post #283. So, knowing that the shorty Pro5.0 handle is a bit of a reach when my seat position is just right, I took a look, and found this from none other than Pro5.0. It's solid steel, and will hopefully hold on a little better. Not clear in the pic, but it also leans a bit left, which brings it a little closer to the driver. I'm looking forward to trying it out. It's a nice looking piece, though it'll be covered up by the boot in my case. It definitely comes back further and will be, I suspect, in a more comfy position than anything I've used, to date.
New windshield:
I kinda haven't liked the aftermarket windshield that's been on Black Jack since I got it in NJ in 2014. I read a few threads and realized how hard it used to be to get a high quality Carlite OEM replacement, and also figuring out that I could pick one up in Charlotte, just 2 hours from my house for $200, I drove over and got one. Paid a local company to come out and install. It's pretty nice not lookin' through pitted imperfect glass for a change.
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