Mercury 2.5 cut heads

One set each 35cc,36cc,37cc 100.00 each plus shipping i also just found a set of 787 c4 heads which i dont recall seeing before they are 35cc i checked them
488-C4 LATE unmarked 38cc stock heads
488- C3 Early unmarked 38 cc stock head
488-c2 single unmarked 260 head unpainted cut to 29/30 cc 50.00 shipped
15221-c2 Bridgeport single unmarked unpainted 50.00 shipped
488-c3 single painted no marks 50.00 shipped
789 c3 pr 260 heads unpainted one hole damaged 100 shipped
488 -c4 pr promax heads unpainted one hole damaged 100.00 shipped

a F.F.I. early and late heads some of you guys know and maybe some dont the casting numbers changes pocket dia and cc on early and late IE: C5 head early model are small dia and late model they are the big ones( 42cc) early heads have the 3 reinforcement bars at spark plug holes late do not
also i have found a few being marked the same C-number but are different dia and cc so momma Merc has its hiccups most of the time it pretty much the same but not always just what i have found thru the years