Originally Posted by zixxer

it seems if you have a non tuned version ...you cannot put the tuned (orange head on it) the head on the non tuned is fine and you will save money on glow plugs ....awesome motors tuned or non tuned ....check out www.powerhousercperformance.com ......i believe mark still has some non tuned versions with his race port on them for 260.00 i believe frank l up there runs marks motors ...as do i ...they are awesome and for 60 bucks more than amain ...you will get a motor that will perform as well or better than the tuned version .....