it's sounding like you are wanting to mod your car a lot. i have nitrous as well and slicks waiting for me. you won't be able to do the same with the 7.5 with an reliability. not even drag radials. by the way, the TOTAL cost of an almost new GT's rear, 4.10s, gear install, and seling my old stuff cost me a total of 500 bucks. and i didn't have massive connections either.