Suggest you check out AAJ Brakes - do a google search on "aaj brakes" - they might have what you need. I just bot a kit from them for my 1960 Chrysler New Yorker, they mite be able to help with your Imperial. I am not an expert but the kit appears to contain high quality merchandise. Good luck.
Tom
68 Crown Convert
60 New Yorker
Back to the Home of the Forward Look Network