Hi
Where did you get raw heads?
There is a company that Robyn recommends called Clearwater.
They use off shore castings and reuse springs,valves.They send a shipping label for you old heads.
I would expect getting raw heads and taking them to a machine shop to put in valve guides,seats and grind valves will cost you more than getting finished heads from Clearwater.
The company that makes replacement 6.5 engines in the USA also sells complete heads but they are expensive.
I got some rebuilt heads 9-10 yrs ago through a Quebec company,they seem to be working fine.
Get Felpro gaskets and bolts.
Thomas
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews