Grabbed a set of G heads off a 1971 Toronado for spares. These had valve rotators. The intake stems were dry so the guides are not completely shot. The valves have a good margin and are not recessed so there is some life left.
The bottom clean cover is what came on my 1975 455 and it has a short baffle. The top dirty cover has the long baffle and was on the 71 Toro. Wonder what year they changed?