Yea, we had a can from Mario and it was nice enough. Don't recall his pricing though??? Also, he was not supposed to sell anymore with the kerker label since he had been threatened by them a few years back. Now, if he has changed and is actually using true Kerker carbon fiber cans they are very expensive new. What I have is the true kerker stuff though we buy them used on ebay that were generally damaged in some way. I shorten them (they are very long to start with) and adapt them to fit the max. There may be pics of what they look like on here in my chrome bike thread but I can't post another one since I am over quota.
I had (and have) one of marios cans that the end cap fell off (after the muffler fell apart more then once) and he could not get me a replacement one so I have one with no guts if you want a really loud one! I'm not saying the can is crap but the mounting of the parts together wasn't exactly great. It still is a nice can and sounded good. We just had to pick up the parts off the highway more then once and the last time we didn't find them all.
Sean Morley