You said you didnt want to go the supercharger route, but you would if you had to. In order to keep up with or beat modded LS1's, you have to. Think about it this way: You could do all the bolt ons: Cold Air, Throttle body, headers, x-pipe, cat back, gears, pullies, timing adjuster, and you spend like $2500-3000 already, and youre still not even that close to where a supercharger would put you. If I could afford it, Id do it in a second. Bolt on a supercharger, and youre making ~350rwhp, and stomping stock LS1's. Good luck.
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Black 2000 GT
Magnaflow Catback, K&N
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