alot of the top end parts can be re built rocker arms re arc rebuilt .valve spring push rods .better valve seal and valve s will not be hard to get .the lifters can be re built and cam re gound . this may be a better way to go as the lifters and cam metal makup up is better then the china stuff . pistons can be made if you want a forged piston thru many .JE .Ross . many others bearings may be hard to get .but they make bearing for 36 caddys and i did not think that was going to be EZ it was not to bad .