1970 -72 340 J heads

1970 to 72 340 j heads 2.02 intake 1.60 exhaust stainless valves , yes I do think these heads are rare check ebay prices, One head in excellent shape , both have dual springs bronze guides , They have been ported and have been on a flow bench for max power , one head is damaged but can be repaired cast iron welding and machined heads are $400 for the pair