Just sorting out my suspension on me 88" S3 rebuild. I've been reading up about Parabolic springs, not completely sure if they're what I want (But thats another issue). Anyway I am not sure of the following.

Shackles, Do I fit longer ones, if so which ones?

Bushes, Original or Poly, if Poly which make?

Shocks, the ones I've just taken off seem ok or do I go for longer ones?

I am planning on using it for overland trips and greenlaning, nothing too extreme but I do want it to able to handle pretty much anything within reason.