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With these mod's to an 04 how much hp will it add? JLT/cai, 70mm Accu Fab throttle body & plenum, Motive 4.10 gears, H pipe and catbacks and underdrive pullies...
The exhaust/gears will make the biggest difference. The intake stuff won't make a huge difference, neither will the u/d pulleys.
If it was me, I would skip the pulleys/intake stuff and do LTs/mid/catback/gears for the best bang for your buck. Even without a tune it should make 250+ WHP with that setup, and with the gears you will definatly notice a difference.
Skip it all.... except for the exaust.... Bassani exaust, Procharger, headers, fuel pump, injectors, tune..... DONE! the rest is piddly stuff you will never notice!