Seems like there's a good amount of us in SoCal. Anyone interested in renting out Grange for a private day? If we get 10-15 people together, it's super cheap.
Update: Finished round one of mods to my 328i drifter. Dropped the subframe and did the reinforcement kit + all the bushings. Welded the stock 2.93 diff and went to Grange. Even on stock suspension, the car felt great, but the 2.93 rear end sucks for drifting at low speed. Going to pick up a 3.46 diff, throw in some stiffer springs, and it should be ready to rip.