Engine definitely not seized. Runs great and solid. This one is a little odd though; it has a triple carb setup. (didn't look too closely to see much about that yet - who made the manifold and carbs - as it runs solid). According to Dad it came that way from the military when he bought it.
The exhaust leak just wants to put you to sleep in the cab... which is a problem so we don't want to try and run it long without a new gasket. It also gets about 4 miles to the gallon with that setup so probably not going on any long distance highway runs.