I am looking to find the bolt size for the crank,pullet, on my 1978 360. I'm not at home to get my tools, have to buy one and don't want to buy 3-4 could be's lol. In metric, I'm guessing 32mm?? My34 mm is too big and nextsize socket I have here is 15/16 and its too small.please help. I'm in no...