Quote Originally Posted by 99regalgs View Post
Like other people have said a ported throttle body would be a good option. You could also get a ported rear manifold from ZZP and a ceramic coated crossover. You may want to get a larger exhaust although the stock exhaust should be fine for the current mods. You could always get a GT2 cam rather than a GT1 unless you dont have money to get a tune. I believe a dyno tune from ZZP is only about $150
Why is a ported TB a good option?

It does nothing for gains really.

Ceramic coated crossover is a waste of money, its a 3800...the motor is going to get stupid hot regardless, and the rear manifold is the LEAST of the 3800's bad exhaust issues...see U-BEND, FRONT MANIFOLD CASTING, DOWNPIPE.

Larger exhaust piping is also a waste because the factory catback is good for 300+ FWHP before it becomes a flow restriction. If you want a different noise, change the mufflers and tips. Like I stated before, the GT1 and GT2 are nearly identical...also, get a custom in car tune...they are better than ANY canned tune.