I have to correct one part of my post the cars were manufactured from 1987-89 when Chrysler owned AMC . Here is the link
Dodge Diplomat - Wikipedia
And here is the paragraph from it : " By 1981, Chrysler was switching to smaller
front-wheel drive designs. However, its older and larger rear-wheel drive Dodge Diplomat (as well as the Chrysler LeBaron and Fifth Avenue) continued to sell. Chrysler's then executive vice president for manufacturing, Steve Sharf, met with officials at
American Motors (AMC) to use the extra capacity at an assembly plant in
Kenosha, Wisconsin to build the full-size cars.
[1] Chrysler's tooling was moved from
St. Louis to Kenosha, and from 1987 until 1989 about 250,000 Chrysler and Dodge models were built by AMC at a lower cost than Chrysler could.
[1] This relationship evolved into Chrysler's purchase of AMC in 1987.
[1] "