Slip-on installs are free man. I wouldn't pay someone more than $1 to do it, let alone $140. That's a rip off. You'll be okay, just slap it on there yourself. Look at stock can, take it off, then put new one in it's place. Really easy.
These 2 are crazy stupid doing something like this dressed like that, but put that topic aside and this is a video that makes me smile. The guy on the 10 is the same guy that went 201mph on his stock motor. He'll be dead one day racing like this, but at least I'll have videos to watch until then. http://www.zx-10r.net/forum/showthread.php?t=99638 http://www.youtube.com/watch?v=0_LmA_UiYo4
Loved the 1st one and 4th one. 2nd one was okay, but the 3rd(tokyo drift) was awful which is why they have been working around it and playing everything off as happening before that movie.