A couple of things that may be of interest:
1. Attached is an older interchange list for 1951-55 Kaiserr that Tom Erickson was good enough to share with me when he placed a recent order for patches (see the ad in the Monthly Bulletin; the patches are a National level fund raiser). I cannot attest as to availability of any item listed but it does identify interchange with other vehicles (make/year, etc).
2. I found one extra copy of the 2-part interchange list I put together and offered for sale in the 1990's. Part one lists updated factory part numbers (K-F or, as applicable, Willys Motors/Kaiser Jeep) for earlier items (this part 75 pages). Part two lists general cross-reference with original suppllier part numbers for electrical, brakes, shock absorbers, etc. Note that this was compiled in 1994 and does not list NAPA cross-references. This book which covers Kaisers, Frazers, Henry J and even Kaiser-Darrin mechanical stuff runs well over 103 pages. You can convert the K-F numbers for your car (as applicable) to Willys Motors series #'s that can still (in some cases) be found in the FCA system. Price for this is $30.00 USD and includes Priority Mail insured shipping charge. Sample pages are also attached here.