This kit is the classic big bore kit of yore. Before the Gila kit came to dominate, the Metrakit was king.
Metrakit went out of business a few years ago, and this kit was thought lost forever. We found a small stockpile of them, and are very please to share them with you.
In case you are not familiar with the kit, you will need to both bore out your engine cases to fit the massive sleeve, and weld on some material to your cases to allow perfect port matching. This kit is for the moped Wizards, or aspiring apprentices.
Probably does not include intake/spring.