Valve lash question?

Do the heads have hardened valve seats. Could be a sunk valve maybe?
Bad sport, here is the info I have on the engine:

1972 340 block bored .30 over with 10.5.1 TRW forged pistons w/moly rings rods resized and bushed w/floating wrist pins and new locks.

pistons and rods balanced

arp bolts and crank polished

clevite 77 crank, cam and rod bearings

windage tray

dynagear tru roller timing chain

crane cam 284/480 degreed

J heads 3 angle valve job

Comp cams locks and push rods

Mopar perf. valve springs and adjustable rocker arms

Edelbrock torker II intake