Looking in the 1974 Chrysler parts book at
www.mymopar.com, in the listings for the front sway bar items, on all Chrysler front sway bars, they came with the rubber mounting blocks attached to them, using a retainer to mount them to the front frame area. Plain and simple. Only TWO sway bars listed for C-bodies in the parts section. One was for non-wagons and non-HD suspension, with the other being for wagons and HD suspension. NO optional front sway bars. Unlike a middle 1960s Fury with a 318, sway bars were standard equipment (as they were for a 1966 Fury 383 vehicle). I fully suspect that the 1975-78 C-body vehicles were similar.
Chrysler did not service those sway bar mounting blocks separately, from what the parts manual indicates, so that leaves only the aftermarket to supply them. In reality, a front sway bar can be one of the least-replaced items on the car. Unless a PSF or similar fluid leak degrades the mounting block.
The 1974 B-body front sway bar mounting link has a modified version of the '65-'73 mounting link, with a removable retainer lower strap. Perhaps, if the bar diameters are the same or similar, those B-body mounting links could be used on earlier C-body cars, along with their rubber items? Parts lists and illustrations are in Group 17 of the parts book. Download the book and see what you think . . .
Respectfully,
CBODY67