360 is still running hot

I had similar issues. Your set up looks neat. I used a flex fan and a four row rad. Your air gap intake should be helping. Keeps hot oil away from intake runners better. One person told me to get a high flow thermostat. Couldn't find one at the local parts store. So I did the unthinkable...drilled holes around the perimeter of the thermostat. Hey, I was getting desperate and it helped quite a bit. Rad hoses were not collapsed. I did not use a windage tray when the engine was built. That might have helped.