Ted -
Have originals re-arched, or call ESPO and get a set, maybe +1" - and for street shocks, I've been OK with the basic Monroes or whatever, oil-filled.
KYBs were fine on my Z28 "canyon car", but a lot of guys here say they're too stiff for Mopars.

I'm surprised at how low Skicker's Dart sits on SS springs - looks stock.