Quote:
Originally Posted by BUBBAS IGNITION
Early ( 4 hole bell distributor) , early (3 hole bell distributor), shallow ( 2 bolt crab) used with a early camshaft, and a deep ( 2 bolt crab) used with earlier camshaft, and the cast upright single hole distributor.
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I've never heard of different two-bolt covers. Any pics to represent the differences? If there is a two-bolt cover for the early cam, I'd think it was an odd retrofit piece, and is likely
very rare.