This is for a 1.3L 8v Sami engine block. We have a crankcase with trashed pistons/piston rings, and a good crankshaft. Also have cylinder head with trashed gasket and valves but a good camshaft, rocker arms and valve springs. Block was seized; pistons and valves are rusty. Is it worth it to clean it all up and rebuild the block? Or should we just part it out? Which parts are worth rescuing? Thanks for any advice.