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...