I have a set of Leda coilovers with no springs. What length of spring and poundage rate would people suggest for fast road use? The car will be lowerd 40 ish mm.

I have phoned Leda but the number on the coilovers is now residential (they get loads of calls from customers ) and the number on their website is a totally different company. I also havent had a reply to my email.

Any Advise?