Getting hot on the highway with the AC on.

Factory Duster fan shroud with a 5 blade clutch fan from the same mid 80s Era Dodge truck that the AC components came from. The rubber seal between the hood and core support is not there but I do have one I could install. I guess I better check my fan clutch is good too. The fact that it's almost new don't mean much these days!

Cley

I didn't see where you said the hood to core support seal is on the hood. If it isn't that can cause issues, as it allows air to come in between the hood and core support that would normally be coming through the grill.

But if you aren't going over 200* and you aren't experiencing boil over I wouldn't sweat it. These engines were typically put together with 195* stats and designed to run there.
I already asked him and he replied it is missing.