“Swap” is not a word I’ve ever heard in a dealership.
Anything they offer will be backed up by their open hand wanting to take your cash. May I suggest that the fitment is so all encompassing and complex it’s not a matter of the old Mk2 Cortina where you just put a set of Koni shocks front and rear over a weekend. Bought from an advert in the back of “Cars & Car Conversions”.
In the words of the old TV advert “I’m not helping much am I?” I’d love to be of more help, but sadly I think you are where you are...