Chevy style muncies have the speedo fitting on the passenger side. Pontiacs have it on the driver side of the tailshaft housing.
Also the above comment was correct; the early units have a smaller countershaft; the later ones are 1" and better.
George
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum
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