I'm not totally sure, it seems to vary month to month
Seriously, they've switched hands and gone away then come back so many times, you never really know if they're around or not. It's been a few years since I kept up on it, but it seems like they were using a suzuki or aprillia v-twin in their own chassis last time I checked.
Looking at the local craigslist I saw one of my dream dirt bikes for sale, one I'll hopefully add to my collection before I die!
http://redding.craigslist.org/mcy/1026954083.html
