Get this, My wife and I raced on a loose concrete track this weekend and her car was everywhere except where the line was, so i gave the prospec some rear toe in, and lowered the rear shock one hole and tested it between heat's. Better but still a little loose. Then I noticed All of the Mugen guy's had there rear sway bar dissconnected! So, being (Monkey see-Monkey do.)I removed our Mugen's rear sway- And wow! it stuck great! Anybody else tried this? I recommend it on concrete and loose-unpreped track's. Just my 2 cent's. C.