Just want to say thanks for all the input so far.
Well today after work I went by the parts house got a new thermostat 180°, gasket, new exhaust gaskets and some copper rtv. Gonna get new studs too but want old out to make sure I get proper size.
When I got home and for most of the evening I been tinkering with the dang shifter linkage, btw its an old MR. Gasket, not really liking it. I still havent figure out how it get is adjusted properly, goes, from 1st to R smoothly then to 2nd and 3rd, but if I am not very, very , VERY careful when shifting out of 1st, to N, it gets hung up in 1st and wont go back into any other gear. I've tried adjusting the linkage many many way but satill can't figure it out. I'd love to go out and buy a new one but don't have the cash right now.
BTW didn't mess with the heating issue tonight.
PS I understand this isn't a Ford truck forum, (been there also) but y'all are like family so that why I bring it here.