If you want the nostalgia look, then call Eaton in Michigan and have them build you a pair. You'll get more consistency with tuning then using the mopar SS stuff. Those assassins' are quite good but boy do they add the pounds. Look for someone at the track during a nhra divisional meet and see if you can find a hemi or 440 stocker that's running the SS leaf and get their input. They may say stock SS but usually the leafs have been changed.