03 Cobra max rim width.

Hey all,
Got a quick question. How wide of a rim can I stick under the front and back of my 03 Cobra Convertible?
It's got the IRS, stock suspension all around.

Font:
Can I fit a 17x10 in front? maybe 9.5?

Rear:
It's IRS so I don't know the clearance issues associated with it.
(I've had an 03 GT solid rear axle for years with F-17x9 - R-17x10.5's on it
wearing F-275/40 R-315/35 respectively.)

I saw an ad in Muscle Mustangs and Fast Fords for Maximum Motorsports that shows Chris Griswold's ride and it looks like it's got 10-11in wide FRONT rims.... I wanna do that.... lol

Does MM's K-member and A-arms make more room for rim width?

I want to run this thing in the Silver State Classic, since I live 2 hrs away from that part of Nevada. So, I want supreme handling, supreme grip, supreme stability. Which...is...hard in a convertible.

Anyway... ideas? Suggestions? (besides a whipple/fuel system upgrade...I know)

??

3/8 spacers and long studs?.... nahh... just get the rims with the right offset.
On my 03 GT, I have 10.5's out back with a 27mm offset. No spacers needed.

Is that the same for the IRS?

excellent

That's great, just what I wanted to know.
I love MM's stuff. Got their CC plates and rear lowers on my 03 GT. Good stuff.

Any other info you could give me on your road race setup is what I want to know. Nice times, by the way.

I am eventually going MM all the way as $ permits.

But today, I'll just try to get the 11's on,
May I ask, what's your offset? 18x11 w/offset?
I'm trying to avoid the spacers. I want the center of the rim 11's I choose to be in the center of the original rim's 17x9in so as to not throw suspension geometry off alot.

Thanks for the inspiration.