not horrible, but you can buy brand new heads with everything (cut for .550/.500 lift screw in studs) for 350 each. Check SDPC they are a sponser.
It cost me around 500 for cutting the guides for .525 lift, drilling and taping for screw in studs, valve job w/ new exhaust seats, 904's have crappy seats, and a surface clean up.
02 gmc rcsb, 3/2 lift, 4.8L, auto,3.73's,airaid jr, lt's, magnaflow tune, 212/218... 295/288 rwhp/tq
70 Nova (Barney)All iron NA 355 ..email@example.com 1.70 60ft.
04 gsxr .6L back to a 600 lol