Also later flywheels may not fit in early 216 bellhousings, check that out. A friend wanted to use big clutch assy in his 37, after got it all apart found that new flywheel did not fit into the bellhousing. Good luck

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed