Fleek

Depends on the body builder. Who manufactured the delivery box? Most I have seen used a seat that would pivot out of the way to make more access to the back

we have a very active forum here that can help you with any TC info. Chrysler's TC by Maserati - Antique Automobile Club of America - Discussion Forums (aaca.org)

I would say aftermarket

Think the other one is for a Torino from about the same time. Early 70s

I spent my younger years working in farm country in West Texas in the 60's and 70's. Lots of IHC trucks and farmall tractors were used on the farms and the dealer network back then was really strong. International were known for toughness and dependability. You would be surprised how many are still in service during harvest season.

The first one is an early 50's model. I may be wrong but I believe they were registered by the motor number. A parts store may be able to look it up and ID the year if the motor is original to the truck. I think the red one is from the 60's. It gets tricky with IHC because they made mid year changes when improvements were made instead of waiting to year end. Interesting trucks to an old farm guy like me.

Post some pictures of the vehicle here so we can narrow down the age and model. That will help determine what it is to help narrow the search. Good luck.

Most interesting thing to me is it being a 1 ton chassis.

Interesting truck. I agree there should be a manufacturers plate somewhere that will tell you much. Usually on the dash or door frame area on the part built by the body maker, Do you have any interior shots that may have clues? Inside shots would be great. Grummon was another company that built lots of step in vans

We used some 8V batterys in farm trucks that were difficult to start. It worked well for some extra cranking power but not very friendly to light bulbs. Made them brighter but cut the lifetime.

What type of body parts?

I do not have the answer but maybe someone will know. I would guess it may be because it is a Canadian truck

As you have been advised in your previous post I am sure some people would be interested in helping you when you furnish information about the trucks condition. There is no way anyone can help without info and pictures to help determine exactly what you have. It is a very interesting find but details are a must to even begin. Please if you are really interested in a responce from anyone furnish all the details available to help determine a value.

I am sure several people here would love to help you including me when you start including info on your find. At minimum we need info on condition of the engine, drivetrain, body, milage and plenty of pictures showing views on the inside and out. Just give us something to start on and we will be glad to work with you .

That is an amazing find. Please keep us updated on the info you find.