Graydon has a new exhaust/headpipe combo for the 400EX, and I was wondering if anyone is running it on their machine. From what they told me it's basically their same set up for the 400EX except the muffler canister is now ceramic coated (red) and the headpipe is chromed, but what is interesting is they now offer a different end cap that allows you to use Supertrapp discs to tune the exhaust. Total cost for the muffler and headpipe is around $380. Is anyone using this set up? Pro and cons? Is it obnoxiously loud?