^^^ Just Drift should be perfect.
There is also Drift Buffet:
http://www.driftbuffet.com/
And if you check out the road racing groups, usually they will run drift/grip events @ willowsprings, possibly buttonwillow. Forgot the names of the groups off the top of my head, but I know the SRT boys ran a drift & grip event @ willow springs (separate run sessions, of course) a few months ago.
http://www.willowspringsraceway.com/
And if you need tires for these events, we are having a special on the Federal SS595 Drifting Competition Tires :