GFB Pulleys, TXS Dual stage boost controller(18#'s) Perrin Uppie, and Stromung downpipe. from a dig stock srt4 got walked at first then caught it, but from a 20 roll walked the wrx. And on the turn up boost, it doesnt really do anything on a stock turbo since it is already pushed to its limits. Another one had VF30, FMIC, Exhaust, ect. Srt MBC(17#'s) got beat all the way to 110 from a dig, but then from a 20 roll walked the guy. Grant it the wrx is far better when it comes to turns but if one wants a straight up drag car nothing more nothing less the SRT is a great buy.
-Brian