I got the extensions from schnitz racing, but I would advise you to get them from nick off of this site. his are 275 and come with the same things as I got. Schnitz cost 375, saw nicks to late. It is extended 7"'s. Cache, the bolt on power will be ordered within the next 2 months. I am going to order the Velocity racing stage 1 turbo kit. They estimate that it will take it up to 250 hp. The indiglo gauges are awesome. I really like them. Very bright.