If used as a van and not hauling a lot, standard rebuild is what I would suggest.
Replace the waved snap rings in the OD assembly, the needle bearing on the OD piston (called #1), look the OD sun gear over real good and make sure the teeth are not Brinneled (will look pitted with steps from the wear to non wear portion of the teeth).
Replace at least the governor pressure solenoid as they wear over time especially with fine debris is the system. The pressure transducers usually do not go bad, if you want to replace it make sure the suffix on the part number is AD. That's the latest and best part. Get rid of the GM or others and use the AD only.

If you replace the converter get a Mopar Reman - they have all the upgrades inside.
Make sure you reverse flush the cooler and better yet, install an inline filter in the return cooler line. Magnefine is the best one out there.

Good luck.