Adding to the coil-over debate/discussion: I did the "Ground Control" conversion (w/Eibach ERS springs, 325F/300R spring rates) with SPAX shocks on the Turbo 4Q. Nice adjustability, but methinks it's more of a 'gee-whiz' set-up. But, continues to work well under all conditions. P.S. Graydon Stuckey is 'the man .' Tchuss, Duane San Diego, CA