I purchased my N1k with a brock's alien head full system and I was wondering if anyone out there has replaced the alien head can with a milder one? That pipe is just too loud for my liking. I have seen the noise reduction plug but I question how much that will help. I have the stock system but I dont want to add all that weight back on and I would like to keep the headers if at all possible. So my question is, what canister will fit the brock's header/mid pipe? I have yet to be able to pull anything up off the web. If nothing else I will sell the brocks and get some slip-ons