ray: actuallly the stock caster setting when building the Mission is 11 degrees.(2 washers at back) 8.5 degrees(one washer each side) is what many people have gone to. I don't even understand how Alex could be at 0 degrees, the minimum is 6 degrees!
Looking at the pic of his car, he has one washer on each side. He is also running the standard front suspension arms. So unless he has done some other mod to the car, I have to believe that is a misprint.