Shoot me an Email... local shops charge by the degree of work. They have too.
Usually just a good gasket match and removing the EGR bump is about 200-250.00, porting the exhaust and doing some bowl blend is around 375-400.00 and PORTING intake and Exhaust, bowl work ( pocket Porting) is anywhere from 550.00 UP!! Then add the Performance Valve job, surfacing the heads, ...blah, blah, blah.. and your around 650.00 PLUS, or add performance springs, retainers ( ruffly another 120-155.00) and stuff and it goes higher..
Usually a home port job will yeild 170-180 cfm on the intake, the shop (Depending on experiance) can get 180-190 CFM, the good ones will pull 200+ cfm, but is all money.
Any gasket matching or port work helps.. with a ton of 5.0s in the 12s on ported heads, that says the power is there, and usually the price is in any budget.
Just me................................
Thumper