I don't recall seeing anything over the years. Recommendation has always been to go with a quality brand. I can only guess that H&R and Eibach are similar as I have had both on the same car. They are firmer than stock but not a whole lot it would seem. Of course that is all relative ....
I think so. I've utilized Eibach, B&G, and BAT...and I really liked Eibachs the best. All will reduce dive and side-to-side wallow...but not as much as a true coil over. Springs/struts are can make a big improvement, but are only a starting point to a well handling car.Did you feel it was worth the upgrade from a handling perspective? Am I correct in assuming stock springs are linear whereas most aftermarket springs are progressive? How does that differ in feel?