Damper retaining bolt?

i have run a 72 and up radiator and now a 64-65 radiator in my 66 without an issue ( all using the spacer ). only reason I didn't buy the 66 radiator from Champion is its listed with a smaller hose connection. IF I wasn't in a rush to get it I would have contacted and verified it was not smaller. All the radiators I have seen listed for the slant have a passenger side lower connection.