Price competitiveness is a key issue which the Chrysler dealer operatives need to be aware of. BUT, if the Mopar/Chrysler factory accessories will be warrantied under the basic vehicle warranty (when installed or contracted to be installed, as a part of the vehicle sales deal), then that should be a huge selling point. This can be a double-edged sword unless you have good people in the shop that install them!
When selling ANY kind of add-on accessories, there generally needs to be ONE or TWO counterpeople who are deeply involved with this part of the situation. Dedicated (specified) employees who know what's going on, what fits what, what availability might be (from the dealer chain or from Chry/Mopar), etc. This is a much better way to do things than to HOPE that anybody on the parts counter will know enough about what they're trying to do as they might try to do it for customers. Hopefully, though, other parts operatives could go through the process of looking things up, checking availability, and correctly pricing if the other people aren't available right then.
If you can't get a good supply of items from Chry/Mopar, then find another source (higher-volume supplier in your immediate area) that can supply similar items. It's better to try to take care of the customer's desires than to send them to that same supplier and LOSE any profits . . . provided, again, there are competent techs in the shop to install the items and do it right. It's generally best to use OEM-supplied items, but if the OEM pipeline is dry, finding other credible and competitively-priced sources is necessary.
Been there, done that, with Chev/GM OEM pickup truck accessories in the 1990s. Great catalog, lots of new stuff, but no part numbers and no availability, in the 2nd model year of that truck. What we could get, we got and sold out, ordered more the next time, and made it work as best we could.
CBODY67