my mt2's engine is on it last leg so i went out and got an os18. first was the engine mount(didnt know which mount to use). i thonl i have that problem solved. however the shaft at the front of the engine (OS18) is shorter than the OEM engine and the clutch bell and clutch assembly will not fit on the OS18. Did i get the wrong engine or do i need different clutch and bell? enine is an OS18 Cv-r