not haveing the belt drive upon the initial mock up, here's what i ran into. the jesel cover would not sit flush to the gasket area. it was hitting on the areas in black. the thrust boss for the cam needed some work and theres a galley plug that needed some grinding as well. this jesel drive is about 15 years old and maybe the newer ones might work with out any mods. alls well now, but i wish i did this before the bottom end was assembled. was a lot of time tapeing and sealing things up to keep the chips out. but i did.