I'm running the basic fel pro blue head gasket I believe it's .039"compressed thickness with at a 4.180" bore.
My 8553PT's compressed from .059" to .051". 4 & 3/16 bore (didn't have my calipers nearby for the bore dia measurement but does correlate with your 4.180 dimention).
live every 24 hour block of time like it's your last day on earth
