I have a 71 Canadian Swinger 340 Special. The OP is right about the specials being the lowest line of trim. Some got dealer upgrades though. Mine is one of the 25 Crestview cars that got upgraded to carpets and a white interior.
There were a few 72 Swinger Special 340's built for Canada too.
BTW how is the fit on the AMD panels ? I need to order quarters and such.
Garth