I felt bad for a while for concurring with HRL to throw the Holley as far as you can (he can be a bad influence).
But with your recent troubles, I still stand by it. Even though you have other issues with your engine, Carters and Q-jets, don't generally get blown up by backfires.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission