Sadly I've rarely seen Mini's in competitive racing on TV. The times I have seen them on TV, they have been from the Nuzzo Motorsports camp, www.nuzzomotorsports.com. They recently did pretty well in some of their races. Other than that I'm not too sure on the class they run in. Hope this helps some.
PS Are you thinking of joining them in your Mini for some track races?
The SSB race will be on Speed again on 11/26 at 3 AM (TiVo is your friend!). There was one MCS and it got a fair amount of tv time. SSB is still largely populated by Miatas (which is okay, we have one of those, too), though the Z4 seems to be the hot ticket right now.
There were seven Classic Minis in GT5. I don't see a date for a repeat showing of that.
A MINI S won SSC in the runoffs, this year (05) : National Champion!
Check http://www.speedtv.com for the schedule.
Check http://www.injector.com for the motor builder.
Tim Marren (above) will be offering "turn key" MINI Cooper race cars for sale, soon!