please refresh my memory.My friend is installing a starter on his 1968 383 to fire it up on the stand,when he got the motor it was pretty much complete except for the starter,now I don't remember why there is a large bolt hole on top and small one on the bottom of the starter flange,it looks like both are 7/16 thread. is the top bolt supposed to be a long shoulder bolt,or is there supposed to be a sleave that the bolt goes through? thanks