ok..I have a 2002 GT convertible, its a auto. I have the predator tuner,no cats,stock midpipe going bye bye soon,flowmaster 40 mufflers turnt down, and BFGoodrich T/A drag radials 275-45-17's. I wanna put a 100 shot of nitrous and 373's or 4.10's not sure which i should go with. What do you guys think i would run in the 1/4