4 bolt disc brake m/c

a question was posed this a.m. about what this m/cyl fits. i went to napa and aap storess today and looked at paper catalougs to see if i could find a match. i found 6 different possibilities that match pics. mopar dealer said part number on box was 76-78 posssibly. what i found was possibles for 67-78 b,c,e,f and trucks/vans. but no a body. sorry for any confusion. i will not say something fits this if it doesn't just to sell the part.