For a street car I'd go with Koni shocks. Koni shocks are adjustable and are very high quality. They have a 5/8 lower bushing which is the wrong size for a Mopar so you have to work around that. I made lower shock plates for my Coronet. I run SS springs on the Coronet and it is a street car. The car launches pretty nice as long as I can keep it hooked rather than up in smoke.

Another thing you might do is play with clamps on the springs. You might want to add some clamps on the front of the spring to stiffen them up.