Small thermostat and water neck housing on my M1 Inlet

Summit sells them, I ordered one for a 1985 ramcharger.

Thanks for the tip, I was looking at getting some parts from Summit, so it's good to know they have that also, will check it out

Thanks for that pic Lelo, yeah that outlet looks a bit garish, so high - it must be to clear all the extra crap they put on the new engines. I did see those dimples on the Rock Auto site, they have large clear pictures of them. I wish they had kept the nicer looker larger early style. This is a nice new M1 dual plane manifold I have but it's one of those rare times when going to a factory item turns into a pain in the butt to fit.