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i have a 1998 Z71 and i recently put a K&n cold air intake which helped a lil. I would put a set of headers on it. If ur wanting to do all the work on the outside of the motor then i would go with (programmer, intake, exhaust-true duals, throttle body spacer. performance wires and plugs, performance cap and rotor. the headers and intake should wake it up. i have headers on my truck that run down to 2 1/4 inch straights pipes that are dual all the way back. i cut my cats off and welded a peice of pipe up there and i noticed a really big difference when i did that. now if ur looking for internal parts which are very expensive, i would put a stage 2 or 3 cam( which ever one duznt mess up your computer. (roller rockers and a nice cam would wake it up pretty good). but if your like me an dnt want to spend the money or time then i would get exhaust, intake, programmer, headers, throttlebody spacer. and if you have a truck older than a 1998 i would get a performance throtttle body to get that gas flowin good.

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