Originally Posted by cheeba

I went with H&R SS Adjustables - my suspension setup is in the link in my sig. In KW's lineup, all but their Clubsport or Competition coilovers are too soft for my liking.

Unless you were talking to an actual Engineer at Koni, I wouldn't rely on anyone's word there. Even less so if you were just talking to a sales rep at some retail company. There are very few salesman/front-line staff in this World that have real technical knowledge of the product they represent. Generally, it is detrimental to change spring rates by more than 50-100lbs on any given damper. This delta is also affected by lowering and raising the vehicle, thus changing the effective spring rate. I don't know specifically, but I doubt that the Eibach and stock springs are the same rates. Salesmen might tell you what will 'work', but they usually just sell what is good enough, not what is optimal.

Suspension tuning is sort of an art; and, most of what you get from a supplier or forum will be unsubstantiated nonsense. Stick to SAE or other technical papers, technical books, and knowledgeable individuals and/or racers. Eng-Tips is a great forum, but be prepared to have a good technical understanding of what you're asking, and physics in general, or you'll be ignored or booted - it's not a forum for laypeople.