I had the pleasure of a passenger seat in Damien supra and it is like a go-kart , nicest handling Supra I was in
I am running Super Pro upfront in mine and TRD Bilstein setup with TRD Springs , not too sure what springs Damien is using but it is alot nicer than mine , mine is crashy but Damiens soaks up the bumps alot better than mine , mine is trying to compete against them
Only down side to getting the Super Pro setup is you will not be replacing the ball joints, I reckon mine are fairly knackered after 21 years so not too sure what is the compromise , maybe get new lower arms and Super pro others ( like the rear struts for example that dont use balljoints, just the bush)
Hopefully Chris will be able to give us some advise , going all new OEM is $$$ , not too sure if it is a myth that the polyurethane bushes have a shorter life span than rubber