I remember in 2007 when picking up our PC at the factory, I noticed our tail pipe had an extension which stuck way out beyond the body. I was worried we would cut our legs clipping it, or it would hit the garage door jamb. I asked the "Earl" at the time (wish I could remember John's last name...Putman?) if they could shorten it. They quickly removed it and cut it shorter, a nice clean perpendicular cut. I later thought of replacing it with a chrome tip but never found one. After a few trips back and forth, I gave up. Our generic extension is securely clamped on, not the cheap set screw type.
I too would like to know where Will bought it and how it attaches.