Ok I have done all I can do, the heads are both lapped flat I would use the one we been calling "good" that was the one with the higher compression, use it with no head gasket use the O rings, lightly grease them, NO SILICONE SEALER to seal the head or to help seal the o rings, you might need to use some around the studs up by the head nuts to keep coolant from weeping out under the nuts.
Keep in mind if you get wet silicone on the threads of the studs or head nuts this is greatly going to affect the torque you will end up over torquing the nuts, try this simple test take a 3" long wood screw try to drive it into a 4x4 block of wood with your battery drill driver, then coat the threads slightly with a little bit of silicone sealer run it in again, night and day difference, I use silicone sealer on the threads of my wood screws when they are hard to drive and keep snapping off before seated, works better than grease.
As discussed before BOTH heads will need the areas where the head nuts seat machined FLAT you will NEVER get an accurate torque if the nuts are not setting flat making full contact with the head I had to run a drill bit through all the holes to clean them up you could not just slide the head down over the studs the inside of the holes was so buggered up from people using the WRONG head nuts (too small) and the mating surfaces being uneven it moved the metal of the head into the holes then tried to use the threads of the studs as a file each time you put the head on and took it off.
Cant believe they went to all the trouble to fabricate these nice heads then didnt machine them flat where the nuts set, I racked my brain trying to figure out a way to machine them flat here in my shop I just don't have the machine to do it, I have a 3/4" end mill I could put in my drill press and probably dress up the head nut surface but I am not confident I can properly hold the head in place while its cutting if the cutter grabbed it might throw your head across the shop and damage it requiring welding to repair, not worth the risk, if they were my heads I would send them to Speedchaser have him dress them up, this has to be fixed before the heads are used.