Primarily with the MRA (Manitoba Racing Assoc):
http://www.mrasuperbike.ca/_beta/_layout/_indx.htmThere are actually 4 ex650s that race against SVs, a TZ250, and a couple of RZs, along with a DS1000 and a Buell xb12R. THis is the last of a 2-year commitment I made to be head referee -- I had intended on quitting, but did this to see if I still wanted to race. I did, so I'm done after this year. Also took my other bike, a home-made supermono (single cylinder roadracer) to Mid America -- have gotten a taste for riding elsewhere, and so want to go to tracks like Edmonton, Alta, perhaps BIR (short track), and maybe even MidOhio or the track in Wisconsin.
I realize the modifications I've made to the front end would likely exclude me from some classes, but at my local, all the exs have USD front ends... the Buell is a former moto ST bike, the Ducati is tricked out, having a CF tank among other things. We actually can run slicks on our bikes! So its doubtful I can go in anything other than a 650 sbk class, or a Formula 40...