A couple of questions concerning my 351w. First of all im missing my cam thrust plate bolts, can i just use a regular 1/4 20 bolts? and how about the oil pump retaining bolts? I don't have those either, what size are they and what can i use for them also. By the way one other question, in the lifter valley on the back there is this bung that sticks up with a hole that appears to be in to the oil galleys, but no threads or anything. Do I do anything with that besides clean it?