Head and cam selection help for 440

A couple of years ago they stopped using the powdered metal seats in the E streets.
They now use the same ductile iron seats as the RPM heads.
That's makes them even more attractive to me. Have the guides checked,pushrod clearance,clean up the valves and seats. Gasket match which is easily done and you would have a good set of heads. Easily capable 500 plus hp. I've been seriously considering getting a pair to have on hand. A pair of Eddy heads 1120 bucks. 440 Source 1000 pr, Trick Flows.. much better head 2100 pr.