trying to get into the 12s - 11s. (need some help)

[Skyman]

No two cars run the same.

Have a port job done on your GT40X heads. Those are good heads, no reason to loose money selling them. Go with a SYSTEMAX II intake. 70MM TB, 24lb injectors and matching MAF.
Get a custom cam, and raise your compression to about 11:1.

You probably have all the exhaust already.

Go with a 4.10 gear, Slicks, 90/10s up front, 50/50s in the back, and drag springs.

Remove any uncessary weight and accessories, A/C, PS, etc.

W/ some tuneing that should get you there.

Skyler