2001 rear wheel width question

The only way to get the meats under the rear on an IRS Cobra is to get the aftermarket IRS bolt. It has a smooth head that saves you 1/2" of room. The 99-04 Cobra guys should know more details and have websites for you.
 
At a minimum you'll need a set of these.

http://www.maximummotorsports.com/s...=product_info&cPath=21_88_202&products_id=495 $9.95

MMF-1a.jpg


...and if that doesn't get you enough clearence add a set of these:

http://www.lightningforceperformance.com/lfp-38-hubcentric-wheel-spacer-kit-p-514.html $89.95

wheel_spacer1.jpg


U.M.