The cylindrical muffler goes right behind the cat and has a rear O2 sensor bung. The shop wound up having to cut about 1" off the front of the long pipe in order for the hangers to line up. In addition, 4-6" (depending on taste) has to be taken out of the back of the mufflers in order for the tips to not stick out way far. The Y-pipe was also partially bent in in order for it to work.
The net result though? Well worth it. Quiet at idle and light load - with ZERO drone what-so-ever on the highway. It quickly becomes a screamer when you get on it. Be sure to watch the videos with either a good sound system, or good headphones:
Startup and rev
http://www.youtube.com/watch?v=8rtrmKKkXOc&hd=1
Suction cup mount - a run around the block. 4000-4500rpm sounds FANTASTIC. Not sure what that popping is, it only ever happened once.
http://www.youtube.com/watch?v=YlKgtt8jlWc&hd=1
Highway merging, front windows down
http://www.youtube.com/watch?v=2YANWoP4i0w&hd=1


















