It looks like the self tapping sheet metal screws could be any size and any thread pitch (they go directly into the body). They never said what size or thread pitch the 4 screws on the ends were. So I'll just grab a couple of different lengths and figure it out that way.
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1968 Firebird: Pontiac 350ci, Muncie M20, front disk brakes w/ adj. proportioning valve, white (for now) w/ black interior.
1978 Corvette: 350 H.O., Muncie M21, all available options.
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