What to do?
I did cai, headers & exhaust, stall then gears. A throttle body would be a waste for you, as would a 2500 stall. A 2500 stall will be just a big old restalled stocker. Get at least a 9.5" 3000 stall and you'll also get the benefit of lsoing some rotating mass.
It's 275hp and I believe 335trq. With headers and a few other goodies you should stick w/ if not beat a stock LS1. I rec doing all the " free mods " and then bolt ons. To answer your question about which way to go, I would do the stall and gears for sure. A bigger T.B. won't give you much of a gain. 3.73 gears are great on A4 transmissions. I just put 3.73's on my custom built A4 and it pulls hard!
Last edited by Elliott's94Z; Mar 18, 2008 at 12:39 PM.
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Headers and cat-back exhaust. As said, 2500 is basically stock, so useless. Get a PCM tune after you get the headers and exhaust 
You should notice quite a bit of a change after all that.
You should notice quite a bit of a change after all that. LS1 Tech Stories
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