i got everything in the sbcs and tower braces ,stiff as a board,handles like champ,super glue on the twistees...im still getting a nice chirp on first gear roll and punch it at about 3k and then hang on your going for a ride ,it did help on over all performance ,car is much quicker ,and car is a lot more in control at those real high rpms on first and second,im not much for the quarter mile but this thing with a little shot of nitrous would be a hand full...HE HE,well Christmas is around the corner wife says "no supercharger or turbo " said nothing about nitrous.