I bought some ZENN springs from a guy who had bought them for his stang, but sold the car before he could install them. I researched them I thought, alot. After installing the rears, the car sat on the bump stops. A couple days messing with it and adjusting it I finally got them to work. But I would caution anyone against buying them. They look exactly like Tenzo's, but they aren't. They're made in Argentina they say where the company advertises they have been making stock springs for major manufacturers for 20 years. Maybe, but I doubt it. Regardless here's the car after 5 times in and out with springs, and WOW is it low. Not as low as it was;