So I decided I wasn't going to drive any longer with no ac in the wagon. Went to Wally World and bought a retrofit kit for $30 bucks. Has new o rings, fitting, etc. Got everything installed, sucked down two cans of -134 and the wagon is now so freakin cold I could chill beers on the dash. However, I think it might have a small leak as I now hear a faint hiss near the high side when the car is shut off. I'll have to track it down.