There is a windage tray (see the big thing in between the block halves here:
http://www.subaruparts.com/diag/?mod...ategory=004-A), and the pan is deep enough to keep the oil pickup covered when cornering hard. However there has to be enough oil in the engine to drain down to the pickup. There's going to be a lot of oil sitting just under the cam covers, for instance. When cornering hard ands low on oil it is still possible to have enough pressure to keep the light off but the oil can/will be severely aerated, which is probably just as bad as no oil.
I compliment you on trying to cover all the bases but, as I've said many times before, most people will be best served by saving their pennies and going to a bona-fide driving school. Not only will that put you light years ahead of the others on the track (yeah, I've got lotttts of experience with those guys) but you win more races and not abuse your equipment while doing so. Besides, it's great fun!