[hugger6933]

If the crate doesn't come with a flexplate/flywheel that is the only difference I can think of off hand between the two motors. Yes you should be able bolt the acc and water pump[new of course] on to the fatter rat. the motor won't quite make the full 425 with manifolds but you won't lose over 25 hp I would think by not using the pain in the rump headers. I've NEVER seen or even heard of a machine shop that pulls and does rebuilds. For the most part either it is a auto shop that can do that or a machine shop to do the rebuild. I think the crate motor is a smart plan that you should enjoy. Jim