The Stovebolt Site Forums The Parking Lot Big Bolts 1969 C50, HEI distributor upgrade.

I'm not familiar with the MSD dists. but the factory HEI should fit. I have put them in various small block engines of different years & they always fit as long as there is firewall clearance. I understand the same dist fits big block also. If the tangs are in the slots it should bottom out. If not something is wrong with the dist.