long stroke crank=fail. it has a long con rod. which means more base gaskets. which means... fucko. no better than stock. peugeot stock cranks are fine. find one. stock case is ok, too. open the intake a bit. intake, kit, head and multivar are the more expensive things. gilardoni is great because you can port match on a stock case. the polini cast iron looks like it might work like that as well.