I was looking at the truck on ebay and I believe it is a 1934 cab that have a homemade roof, back panels & doors. The parts must have been damaged or missing. I asked the owner if it had been lengthend and he replied "no". So it is unique. The steel looks great.

"Save your's or someone else's Grandfather's CLASSIC TRUCK"
1934 1.5-Ton Big Bolts ~ Gallery page https://www.facebook.com/Grizzle-Vintage-Parts-1446215762368948/