Depending on how much detail you need, there is a bunch of bare chassis at the factory. Maybe someone there for pickup or repair would walk over and take some pictures for you. Check The Who's at camp Newmar thread. I think the Freightliner has the white plastic covering the steering column and the Spartan has the black, or vice versa. The techs were more than happy to point them out when I was there. I was quite surprised at the difference.
Bill & Chris Bélanger (KI1Z)
'04 Georgetown XL > '17 4018 DSDP FL > '18 DSDP 4327 K2
2018 JL Wrangler Rubicon 2 Door