03/04 irs swap into an 01 cobra

Bolt right in and stronger (just a little)

What Cavallo said. Had it done to mine.

may want to step up the halfshafts too. I had the swap done on mine and broke the 03 halfshafts on my first pass. Have 3.73 gears and was running new nitto drag radials. launching at about 3500. If you drag race only, not road course you will be $$ ahead to swap out to a regular rear axle. The stage 2 halfshafts were like $1500, then i have braces, 800 lb springs, Aluminum bushings, and all the other goodies you can do still have wheel hop. with like $3000 dollars into rear.