340 head gasket questions

Those two little holes in the center of the head are at the hottest part of the head when the motor is running. Because you have two exhaust valves one on each side of them.
The two holes in the block that are plugged by rust can be cleaned out by hand with a drill bit locked into a pair of vice grips and you just gently clean the hole out.
My question to you, was that block baked or hot tanked? Were the freeze plugs removed and the passages cleaned out?
I know in your first sentence it says you just got it back from being hot tanked. But in the pictures it does not look to me like that block has been hot tanked that's why I asked if the freeze plugs were removed and it was actually tanked.