However, FWIW, I wouldn’t do the swap unless the next set of heads were 2.02/1.60 & bowl ported and relieved in the pushrod pinch area (made wider) with headers. Your leaving a hell of a lot of power on the table!
^ This. You have good heads, ready for a little work. Add in new valve job, guide check, avoid the factory ski jump valves, a light cut to true them and a thin head gasket. You'll be happy.
