'65 4wd tires

[75gmc454]

I found a good original 4wd long wheel base stepside near where I live, so I bought it. It is a neat old truck, 283 three speed on the column. It still has its original hubcaps.

The truck needs new tires. I want to eventually do an original restoration.

I wanted to know what kind of tires the truck would have had when it was new. It was never in snow country. The truck was bought new at Check Chevrolet in Baird, Texas.

I want to put a tire on it as close to original as possible.

Thanks.