Extremely pleased with my car kit, received my preorder and built it up immediately. The instructions were very easy to follow and the included tools saved my fingers from the soreness I usually experience during a build. Overall the kit is very impressive for the price. Currently running in rear battery configuration 20% gain, -25% expo, 90% D/R, and 300cst rear 350cst front on included springs. After 3 packs I am starting to get the hang of red and can almost duplicate my cs 2.0 lines on my home track.