Sounds like a fun car. Frankly anything would be an upgrade over worn out springs and air shocks. Spend some time going through the forum there are some guys with well working cars. Here's one 67 Valiant Budget Build and can't forget the legendary Red Brick , autoxcuda has a well sorted car that he's been driving for a long time. check out Firm Feel as well, they are Mopar guys and will spend some time with you. HTH, Steve