Finally got the radiator mounted. It requires a 1/4 air ratchet and two pry bars to get each bottom bolt from the top, but oh well. I'll cuss myself if I ever have to remove it on the side of the road.
Got the overflow tank relocated also. This would be easier if I had chosen a different electric fan setup, but I do like the Altima fans. Easy to find in a pinch and they move a ton of air. I also can't mount the top bracket for the overflow but I'm not really sure it even needs it.
Next I need to remember how I routed the fan relay wires and I'm thinking about wiring another relay in also. The other thing I'm thinking of now that I've flushed the crap out of the cooling system again is what if the water pump is not moving water efficiently. It has been circulating rust water for a while. Fortunately I do have a spare water pump I ordered a while back.
Hopefully it's not that and this will be the culmination of the cooling system issues.