Awesome! Thanks @Will Ebbert and @GG1 4877 !
You guys answered my questions, but I should've clarified what I meant by prototypical a bit more and been more straight to the point:
1.) Will this transition car be the similar outwardly to the one previously produced by GGD as stated in this 2015 ad ? Or look like the ones after question 2?(with the exception of the paint schemes)
2.) The Hi-level's were slightly but noticeably shorter in height than Superliners, will the GGD transition car reflect that height as shown in pictures below?
Transition Hi-level coach/dorm with HEP in the middle, Superliner on the right(Nov. 1981)- from Hebner's
Better pic-Superliner 1 on left(height difference), Hi-Level 39901 coach dorm in center, single level heritage on the right(year unknown.) from Hebner's
The one below now in excursion service but has the paint scheme that would've matched with the single level baggage dorm(from Michigansteamtrain.com)