need advice on some heads

I am running the Edlebrock RPM heads on my car (from JEGGS) Mine did NOT bolt right up to a 360 MAGNUM block (well the bolts line up but they needed to have some machining done for the water and oil galleries done). A good performance machine/engine builder can do that for you, but the whole project will cost me at least $3000 (for the heads and some machine work..I did not do this work myself INDY CYLINDER HEAD did the machine work).