i had bought that Dynomax kit for my stepson for his b-day.
summit had it as an exhaust kit, mufflers, and headers for like $220.
summit listed the kit for all K5s.
Dynomax only says its for 2wd trucks, which is correct, because it wouldnt clear the tcase/crossmember, and also it would exit out the side just in front of the rear tire.
i had sent the tubing kit back and kept the headers and mufflers, and order the Hooker mandrel bent kit that was actually bent for 4wds.