I personally have never seen an off-the-shelf intermittant wiper retrofit kit that would work with the Mopar 2sp or 3sp setups that reverse-to-park. If you have hidden wipers the JCW kit is not for you.

I have built one that did work and postings here some time ago discussed how to do it, but it is fairly involved. Consult the truth table in the factor manual to see what you must control; also, you need a signal of some kind to indicate where to stop. I used an aftermarket Hall effect sensor...