Those crate motors are just the long block I believe, you need to add all the other stuff like a manifold and carb water pump,exhaust, distributer, etc.You might find a good deal in your local swap sheet, 350's are everywhere as are all the extras you need.Go for the 2 bolt main with a cast crank, they are a less expensive than the 4 bolts and will support 325 HP no problem.
