adjustable spring companies?

[M-technik-3]

H&R does but it's far more expensive than GC's My H&R coilover setup if I was too buy now would be about $2300.

[Mossman]

in my experience the $50 kits and the $200 kits "perfect fit to such and such car" like cosmo racing are the same parts, the added cost just buys you simple spacers and such to make the rear fit snugly, and hopefully you'll get a non-idiotic spring length, rate and adjuster length. But with all the cheap options out there I bet you could find the same thing if you did your homework. I've got a box of various ghetto coils in the basement, definitely have enough spring lengths and rates to decently spring an E30 when I get around to it. Obviously GC parts are made specifically to fit, and they include eibach springs which are legit, so they aren't in the same category as far as I'm concerned of the ebay people hawking $50 kits as $150 kits, but they are in a totally different price point to both of those.

[CHIF8008]

look at the JOM coilover group buy on here...