QUOTE(rhodyguy @ Nov 1 2018, 11:59 AM)
I don't think The helper springs were around when I did mine. Do just they just collapse underload and help keep the springs under light tension pressing to the top caps? They must not have much to do with the big spring # rating. Bit of a hassle settling the suspention after jacking the car up. With mine, the threaded collar was supposed to slip over the land on the shock body. I figured that out the second time.
MHO. For a not hi-po engine, stock anti/sways f&r, stock torsion bars and not some AX weapon, 100 lb springs work really well. stock ride I guess.
I agree, the sport bilisteins are very firm and I have stock springs with them, and stock sway bar etc and its super firm and tight, so with a stock motor even if I were to AX it I don't need more stiff springs, just a slight height adjustment. I can put the bilistein retention spring up a bit higher, I am in the middle ring now, if I go up higher and I have been too high before then its really bouncy sitting more on spring than shock. I guess at that point a more firm spring would be better for less bounce but then very rough/firm ride, and keeping in mind tire type and size make a huge difference. I have had 14" fuchs with stock size tires and that was a good bit softer ride than the 16" fuchs and my 205/55 Bridgestone Potenza tires. So the whole combo matters. good luch on your search and sorry for the hijack, for me I might go up one ring setting and see how it sits and rides. those coil overs with springs from Rebel are about $320, and lowest spring set is 200# which I think would be too firm for my 90% street use, and the occasional mountain road carving .