are SS springs enough

Snubbers are available.There are threaded adjustable ones.Or ,go factory,The 4 spd 68 Hemi Darts came with Dana 60s.Go get one.Bolt it together,and install.The snubber springs, and shocks are a starting point.You need to make driveable,then the education starts.Try it,if it does not hook,post a video.You are pretty close.Video the first few launches,post here.That is the telling truth.