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i have had many shift kits on many difrent trannys and the factory tech valve body i got from mike troyer(online vendor here) works great on my 4r70w in my 03 F-150 very hard 1-2 shift firm 2-3 and normal 3- overdrive, little more $ than a normal shift kit but easy to install and all the work has already been done all you have to do is remove stock valve body and springs and install new valve body and springs, very good product, good luck
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 03 F-150 5.4 FX4 with HD supercharger swap at 10PSI, 6" fabtech with PA 3" body lift, 38"15.5" MT Baja claws, on 16" 10" extreem aloys, fabtech steering stabilizer, procomp traction bars, pro comp add a leaf, cranked torsion bars,4.88 gears, detroit locker in rear, ARB locker up front, troyer E-fans, X-cal 2 tuned by Sal, FTVB shift kit, on board air system, TONS OF CUSTOM MODS, AND ONE UNSTOPPABLE BEAST
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