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head swaps

  1. POWERTRAIN MODS - ENGINE / TRANS / TURBO / EXHAUST
    can i take a dohc head off one car and bolt it in . i have a 1999 2L gls. runs great but i have always got better mileage on twin cam heads. what parts, wiring and sensors would i need. does anyone have a walk through on this surgery? or has is always been a full block swap. would like the up'ed...
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