I don't know about the rest here, but I see no real advantage of the PG, it's kinda like a sloppy LSD unit, so it's no really worth the time dealing with it for autcross, better off paying $1200 for the posi if you really want to track the car, I know a lot of you guy are drag racing the car but it's just not my thing, as I fing the electronic posi traction good enough for me.