If your going GT35, a traction control device would help a lot. http://www.racelogic.co.uk/?show=Traction_Control
A dude i knows fitted one to a 400hp RX7 S6. Pure race.
Dial in the desired wheel slip %, set the rev limit, set the launch rev limit, place a switch on the clutch for flat shifting. Id have one now, if I had a RWD.
Look into to it, if your serious about ripping down the 1/4 with a large tahbin, i cant think of ne thing better