440 Source Head Opinions?

Troub said
Thinking of replacing the stock 516 heads on my 65 donor 383 engine that will be going in the 67 Dart. Any opinions? Thinking of keeping the bottom end stock. View attachment 1715886357

Got the 383 pulled out of the 65 Newport today. Fun time but darn cold here in the Florida Panhandle! Will see what else it needs besides new heads. The 67 Darts new heartbeat!