What would be the point in takeing a 4efte engine apart (which is a low comp engine anyway) and makeing it hi comp?..you may aswell just take your na engine out and go 4efte ;) orr what you can do is use 4efte rods which are thicker then na rods along with 4efte head, throttle body, inlet, ect but even then you still wont make the same power as a turbo would.