Update on AC: Southern Rods is sending me a new Thermostat.
Decided to improve the road worthiness of the truck for Cruisin' The Coast so I replaced the differential fluid. Easily a 45 minute job. Eight long hours later, it's almost complete! Seems the plug you remove to check the fluid level was not going to come out in one piece. Broke multiple tools. Used heat, chisels, hammers and all kinds of stuff. Decided to commit to my set of Easy Outs. I managed to precisely drill out almost the entire plug without hitting threads. A first for me. Still no luck. Got out my least effect tool, the pneumatic body saw, and it saved me a again. It is moving up on my list. Cut 4 slices longitudinally and finally managed to get one piece out. The rest followed. Only cut into the threads in one place. When I removed the rear diff. cover, I realized the diff. case is aluminum which may explain why this high mileage rear end whose oil has probably never been changed was fused to the ferrous metal plug. Painted the diff. cover and got a new seal. It should all go back together this morn.
First sign that I the end was in sight.
