I'm currently in the process of upgrading my suspension and stumbled through the re-amemiya site and am interested in getting the rigid collars and was wondering if anyone has put these on their car. There is a video by spoon on youtube that shows what it does and seems structurally functional. Could someone also tell me what this one is? : http://www.re-amemiya.co.jp/commodit...fa25&scd=11143

are they just the rear rigid collars?