As for B-C-whatever parts interchanges, one of the GREAT things about the earlier (compared to now) Chrysler parts books is their "grid system" of how things are laid out. The body series and divisions are on the upper horizontal menu. The parts names (and other particulars related to the particular part description) are on the lh vertical listing.
The parts are divided into "groups", which you'll see in the front index page. Go to that group, find the part description (Chrysler's "names" might not be quite what you might term something, but it all makes sense once you understand how they "name" things. . . more engineering-related than "street names", typically). Then find the appropriate model in the upper menu, then, where the horizontal line from the part name and the vertical line from the model designation crosses, the quantity of the item needed per vehicle is listed. Then, continue to the rh column and you'll find the part number. It's all pretty easy to decipher, compared to the earlier GM books. Chrysler relies more on Option Codes for many things whereas you had to know "the coded description" of where the part went (as the earlier Chevy catalogs). Once you get the hang of it, pretty easy.
As for the desired crosses between the model platforms, that is so easy with the Chrysler system as one book covers all carlines (truck chassis models are separate).
Welcome aboard and holler if there's anything you might need!
CBODY67