suspension upgrades?

My advice is simple. Rebuild the suspension with high quality stock pieces. Use rubber bushings. Urethane bushings will transmit too much road vibration to the body.

The only change from stock I would recommend is the Moog offset upper control arm bushings for additional caster. This will make a nice steady road feel going down the road. Anything more for everyday street use is a waste of money, IMO. The stock Mopar suspension is really good like it is.