I just installed the 380 full exhaust (manifold, Downpipe, muffler) and can confirm that it is indeed a direct bolt on. Previously had full catless Larini system. Putting back all the factory heat shields was a quite a challenge with no instructions!
Impression, it is just as loud if not louder than Larini, which is quite surprising given that I now have the factory cats on the manifolds. No more stinky smell though!