Thank you!
I spent last night getting the two passenger wheels unstuck so that the truck will roll. A torch and a 5lb hammer didn’t want to budge them, so I turned to the old school way I’ve found works really well for getting brakes unstuck - drill a few holes in the drum to access the adjuster, and a few to knock the sides of the shoes with a punch. Takes them right off!
Shoe adjuster can be seen here
Drum is off! It appears that the truck received a brake job not too long before it was parked.
Also snapped a picture of the interior.
And the gauge - 18,018 miles! I wonder if that’s original, or if the odometer has rolled over once?