depends on how much hp you plan on. if just a new intake, chip, exhaust, then def. 4". MBRP is good exhaust. an intake would be an afe, k&n, something allong those lines. look for some package deals, you should be able to get an exhaust and intake for cheaper than buying them seperate. look for some dealers on here.
has anyone tried the 5 inch kit from jegs? as far as the horsepower goes is there really ever enough?lol would love to get close to 1000 foot pounds of
trq then horsepower comes so suggestions on possible combos people here have tried would be greatly appreciated thanks
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