1970 5.7 Hemi Duster

Been slowly going at it. Too busy with all the holidays.
I used a champion radiator, I used the one for the b body, it's a little wider, 26", instead of 22" had to do some grinding and adjusting but fit pretty well. Added the over flow as well. Heater is installed.
So as I was trying to figure out how to get the radiator hose situation, champion's outlet and inlet are the right sizes, or on the wrong side, my buddy look at it and said it look just like the thermostat of his 440. So he grabbed his thermostat housing and sure enough, it aligns perfectly, I'm going to use a 440 thermostat. Just worried it may leak. But I'll find out here soon.