It's all bundled up and running again. The guy hung the intermediate pipe (the one in front of the muffler) too low, so now it doesn't drop all the way to the ground (I have air suspension) *grumble grumble* ... so I've got to get that fixed. But it sounds pretty good. It's a little louder than I prefer (40 series Flow), but the noise is at the back of the truck, so it doesn't really bother me while driving. Much better than the previous 'whoosh' muffler that was under the cab for the last 8 years. The 2-1 Y is nice and tight under the headers, which gives me the ground clearance I need for this ultra-low truck, but keeping up with collector bolt torque is going to drive me nuts. I can reach 5 of the 6 relatively easily with combinations of ratchet wrenches and sockets, but the back header's back collector bolt is a nightmare to get to and back up with a wrench at the same time. I wonder if I could justify a hydraulic lift in the garage to my wife ;\) .