Built Slant six Head O/S valves.

Did you put in hardened seats on the exhaust side? If not what year/casting number is base cylinder head? Do you have flow bench data to quantify the level of increased flow as well as similarity of flow across all six cylinders? If no flow bench data, are you willing to disassemble at least 1 intake and 1 exhaust valve/spring assy. (but would truly prefer all six) so a visual inspection of bowl work can seen? Steel or bronze valve guides? Type/brand of valve stem seals? Valve spring ratings? Questions I had when your ad initially appeared on Tucson Craigslist some time ago. You have to understand that anybody can grind cast iron and call it ported. Not saying this is the case with your head. Rather for me (and perhaps others) to spend a chunk of coin like that, a buyer needs to know quality work was done and not just a lot of grinding. Also, does your head gasket accommodate a .125 overbore (ie cylinder hole ID of 3.525 min.)? I'm close enough I can come by and pick up - no shipping.