Like Scott said, even for autoxing with that size of drop you would have to much neg camber in the rear. I haven't done alot of research but -.75 to -1 deg in the rear seems to be what alot of autoxers like & this is with fairly agressive negative front camber.

My car is probably a 1.7" drop & I believe I'm around 4 washers. I believe my rear camber is around -.75 but would have to check my alignment sheet to know for sure.