Sorry Matt,
Was replying to Dave while you were posting.

A little bit goes a long way for the dime. Just want to make sure there would not be the potential for engine damage. I am not that familer with specific head design, although I have heard of "egr heads"??? This is a GM crate from '93. All I know is 64cc and center valve cover bolts Any hints on determining if these heads are "egr"? Do I even need to know with this mod?