I just had delivered a FMF Q4 muffler from an online seller, and i am afraid they might be pulling a fast one on me. Does anyone here have one on their 1999 wr400? how does it look and mount up? mine does not have the alloy mounting tab at the top of the can, but instead mounts using a band around the can. Also, the instructions that came with it say "installation for the Q2". It has stickers on it that say Q4, but those can easily be stuck onto any can. it has a visible spark arrestor in the end cap. did i get a Q2 or a Q4? thanks.