I was just wondering with the IRS on the 03 cobra would there be enough room to clear an 18x10 rim? I ask because I am seriously looking to upgrade cars but I just bought my rims and I would like to still be able to use them.

 

Is your future car lowered? Lowering the car, ensures that rear IRS subframe bolt will clear the wheel, but on installs the sidewalls may hit the bolt and therefore you are best served to grind the head of the bolt down a little bit. I'm assuming your wheels have the same backspacing as 03's. Either way it can be made to work.