This is the more pricey option which is the cat backs plus the rear sub-assembly, $1495.00. It goes from the end of the cats back to the tips. The rear sub-assembly replaces the rear mufflers with straight pipes, $529.95 by itself. The rest of the cat back assembly replaces the front mufflers. It's a do-it-yourselfer all bolt-on. You can do it, it's pretty easy, as well as the painting. Just look out for all those sharp edges.