S Techs suck. On DA's GR2 suck, they always blow within a few months. I've had ground controls, s techs, h&r, neuspeed race, and skunk2 coils. The best setup I liked were Neuspeed race with Koni Yellows. Yellow's are the best, gr2's are cheap but no where near as good as yellows. If you get s tech's save money for some yellows, you won't be disappoint with yellows.