First off if your looking at any more boost, I'd go with RC 440's or maybe 550's depending on the PSI you wanna run. Also look into a Quafe LSD ( dont used Kaaz, it is a clutch type and needs to be rebuilt every *so many* miles. Also Phantom Grip is shit too, thats just a welded diff) Trash the VAFC, with the amount of money you have wrapped up in this car, you don't want to blow it. Also traction bars will help you a ton. I have a Quafe LSD and Lakewood traction bars and still dont get traction till 8000 RPM in 2nd gear. Also boosted cars are harder to launch than NA, you will need lots of practice, I've never been to the track, but when I do I expect about a 15 sec first pass LOL, then I shoul dbe in the mid 13's by the end of the day. If you need any other help PM me.

Kris