70 Mach Retomod help needed

To give you an idea of what I’m doing…

Surprisingly enough a little over a year ago I found, sitting is a back woods junkyard, a ‘70 351C factory 4 speed Mach 1. I stole the car for $100.00 and have been working on it since. The entire front clip needed replaced and has been updated with a “Rod & Customs” Mustang II coil over IFS. I love the sound and feel of a FE motor so I decided to go that route and have had a hand carved 390 built. My builder and I let the FE got out of control I now have a 390 that has more custom parts then I care to list. Needless to say the beast tops out at 760 HP & 680 TQ before the 250 shot of NOS and stops producing power at about 9200 RPM. I don’t see much point in having a sports car if your going to put an automatic in it, so wanting to stick with the “Stick” I’m having a T56 6 speed with Viper gears built. I also picked up an IRS out of a ’03 Cobra and have upgraded the half shafts to LVL 5’s that are supposed to be able to take 900+ HP without snapping. The IRS and IFS are in place. I am waiting for the T56 to arrive in about a month then I will mount the motor to the tranny and attempt to install them.

My question is this: Has anyone installed a T56 with this much juice in front of it in a 70 Mach? I have intentionally held off tying the sub frames together because I am unsure of how after market connectors will fit around a T56 and if they will provide enough rigidity. I really don’t want to cage the car if I can keep from it but I fear that is what I will have to do. The two out of the box setups I have been looking at are from Global West and Total Control. If anyone has any ideas I am all ears.

Thanks!

Thanks y’all I really do appreciate any input and any ideas. Some of the “Professional restorers” insist that I will have to put a cage and others say that I won’t need it. I can see both sides of the argument and would like to find a common ground. If I could find an aftermarket slimed down cage I think that is what I will go with. So if anyone knows of any I would like to take a look at them. Otherwise it’s back to the custom shop.

Dam this daily driver is getting expensive!

It's the whole climbing over the bars thing and having a fat bar next to the pillers. I was not planning on keeping the back seat so that is not the concern.

I already have the 2x3 tubing but was unsure if the aftermarket solutions would be similar in strength and rigidity. I was just hoping to find a way around the cage. But it sounds like I have no choice. I was planning on installing a 4 point roll bar but it sounds like I should be looking at a 6 or even an 8 point.

Thanks Y'all I really appreciate the input. I started the process of tying the two ends together tonight. I guess that I will have to think of a way to hide the bars inside for a cage.

Thanks again. I tried to post some pics of the way I found her and how work has progressed to this point but the pics are too big. So as soon as I find the time to srink them down I'll post them.