Re: slower track time after mods?!?
Gears will slow you down, but they make you quicker. You need tires and practice to take advantage of the gears. get a 26" tall drag radial, and I would not do any more mods until you get good enough to run 13.2's. And the exhaust mods don't do anything.
The TB and intake are a waste of money, You need ported heads and cams for those mods. get a good used C&L racer 95mm,($125.00) and a tune.
BBK LT's, Catted Xpipe, Sniper tune, UDP's GT500 TB, Ford Racing CAI, CM delete, 4.10, TR6060, 1 piece DS