Got this engine off of e-bay. It's a 40th Anniversary case. It has socket screws (not unusual by itself), and a number "8" engraved on the side of the exhaust. The head also looks somewhat brushed and finished more than stock. Rather than take it apart and risk screwing up a professional alignment, I thought I'd ask you guys.
Is the "8" a symbol from a known rework artist?
Tom B