I'd be interested to know what the spring rates, and lengths were of the sports suspension coils. I am looking at getting some custom coils made up, but of 3 cars, each seems to have a very different ride setup. Mostly due to age, I'd guess. But it means I have no base line info from which to make a set of coils.

85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think