Correct Super Stock Seats?

Just an observation...
In the SS Hemi Guide (Jim Schild) it says, Seat Assy, Bostrom Black Vinyl (2). PN is 2836902
I don´t know if Assy referes to two Seats, and was Chryslers own, so to speak, numbers that was used for these cars, if so maybe that explains a different PN from what is in the Papers in post above.

But, I think "truck" is the key word here. I have seen it in several real early Car Magazine Articles, including the very first article about these SS Cars, in Super Stock & Drag Illustrated, where we get to follow how the Sox and Martin Team prepere their Cuda, in spring of 1968. Seat is described as "pirated from a Dodge A-100 Truck"
In another article, seat is refered to as coming from "the Dodge truck-line"
Now if I had the possibility to check with old A-100 truck owners, I would do so, to see if truck had a seat that could fold, because of the compartment behind the seats.
Unless of cause I got to meet the guy who got that one A-100 Truck, that had fixed seats instaled...