Thanks for the info on the headers Bad.
I think I'm going to get the Supertrapp and rig one up similar to Fury's. Cutting the headers doesn't really worry me as there are plenty of slip-on style pipes. Luckily Supertrapp sells various pipe ends so that if you want to cut the noise down, you can. I like my neighbors.
Also this is kind of a side note, but has anyone tried headerwrap on their S4? I've heard of that the high heat can cause your pipes to form cracks quicker. The holding in moisture thing doesn't really bother me because if it is raining, the pipes will still be exposed to it. Plus I believe they are stainless, so they they will rust much slower. Then I can replace them with Aluminum.
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