i have a very nice and clean 409 big bore cylinders that have been mx/dune port by cpcustoms. and everything you would need comes with it, head that has been cut and everything for this set up, only have been on one ride and around the neighborhood, they run very strong and have tons of power but just lookin for something different, ask lethaface about these cylinders he is a member on here and he will tell you how good they run and how well maintained the whole bike is not jsut the motor, bu any way im looking for a cub set up of any stroke/bore, and i will throw in some cash also to trade for, let me know what you have... thanks.. and Merry Christmas...