Changing the rear end out isn't as easy as you would think, and would be costly. Ring and pinion is one thing, total change out is just too expensive. I guess if you want to strip it down and drag race it, that would be fine. My experience with the NHRA hasn't been a good one. You would be thrown to the wolves in an 8-9 second class of cars. Been there done that. Sportsman is a good class for us, and that is about it... If I had to do all that kind of modifications, I would be back in an old Camaro... Not worth it, now the ring and pinion is affordable, and of course you do need to figure out the right TCU tune...and hope it works...