Originally Posted by PorkChop
I don't know the spring rates used, but Spud's car seemed fine to me WRT suspension set up when I've been out in it. I'm guessing Spud used his car as a starting point for speccing the MX5 build.
That was my guess too. The thing is, Spud's car was Sierra based which has a very different rear geometry.
Talking to procomp sounds like a good idea, let us know what they recommend!