i know the connector on the 85 ups is square and the chryslers are round.. there are bosch with round, but i think they got replaced eventually with the 85 up. i don't remember an ignition harness or dist connector change nor a service or parts bulletin as to how to deal with that round to square change. i also know the 85 up have a different ignition brain part number, but i don't imagine that would be absolutely neccessary in your case.
don't rely on what the harness insulation looks like. you have to open it up and inspect EACH wire where it passes under the crank pulley. there's a coax feed that breaks alot and fixing it doesn't quite do the job. we started replacing those harnesses after a while as the repairs didn't cut it. good luck, chuck.
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