I don't have the answer for you, but go to this site and dig around. http://www.advanceadapters.com/tech-vault/ They have some pdf's for building jeeps (I assume you are doing this on the cj5 in your signature but they have pdfs for other makes if not) with about every combination of motor/trans/TC you can come up with. See what you can learn there if no one has an instance answer. You also may want to hit the jeepforum.com CJ tech section or earlycj5.com site and ask those crowds too, been done many times I suspect. My guess is the clutch for the Chevrolet tranny and the correctly balanced AMC360 flywheel, but I am not anything close to an expert. Hope I understood your question and that helps some. Post up what you find, I am toying with the same combination but with the D20 TC in my case. (you definitely don't want advice from the kid working at the FLAPS).
