They both make big power. I like the kb kits actually....really clean install, very fat powerband. We just did a 3.6kb on a 6spd car....catback exhaust with stock manifolds, and it made 830rw. That's with a stock tb too....the big monoblade would get it up near 900 easy, on basicly a bone stock motor!
And how long will that "stock" motor will last though if you don't beat on it that much except for at the track?
2010 F-350 6.4L SRW CC 4X4
Spartan tunes, 5 inch flo-pro, 4 inch down pipe, cold side piping, AFE stage 2 CAI, EGR delete, Air Dog II
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