Has anyone used one of the Mazda5 intended, upgraded spring applications with a review to share? I'm looking to a spring upgrade for performance and not aesthetics and haven't run across someone on any forum with a shining review for a completed project on the 5. Most attempts to use MS3 products have been mixed with sag issues. BTW, I'm at 35,000 miles, living in Italy, and am already having to entirely re-build the rear suspension. I've busted a trailing arm, and am awaiting the part from my car dealer in Texas, I've replaced the shocks already, and recently the lateral links and upper control arms with camber adjustable parts. Furthermore, the front suspension is starting to give some vibration and now my steering alignment is off. I don't know if European driving is kicking this microvan in the backside, but I def drive it like it a local with a sports car, even with a full load of people and cargo. I don't think Mazda engineers imagined that someone would take the Mazda5 through its paces like that, but when they built it on the 3, and left it with 4-wheel independent suspension and a capable engine...what did they expect us to do with it, drive it like a minivan? Anyway, anyone have luck with a proper spring upgrade that they are satisfied with?