Just for fun, I wanted to see if FCA sold the pass double seat as an assembly. They SURE do!
Passenger Seat Bench [CAA] - SEAT COMPLETE, Front
Part # 1XE16JXWAC
Categories: Interior Trim
MSRP $2670.00 Price may vary by dealer
All the factory order-able parts can be found here:
http://www.mopar.com/ram/promaster/2014/shop/358534/30/3120/
There's TONS of parts that FCA has/supports that aren't important now, but will be in the future. Trim bits, seat parts, door hardware, fascias, as well as all the mechanical parts. The seat assembly above is crazy expensive, but the rest are quite reasonable. And if you can dig up an FCA employee, I'm sure you can get some kind employee discount.