Today i have to pick engines for all the bikes i have yet to finish. Then selling the rest. These two I've not thought about till now as far as the clutch goes. I have two engines with the Fairbanks Morse Rupp style clutch (Does not say Rupp on them) stuck on them. Can I use that clutch? If not, what do they use. And i hope its not that clutch the MTD Columbia used.