Those "little weenie" arms are like that so that they can twist while flexing. Your boxed arms will not twist and will transfer all that stress to your bushings and brackets. I've seen a lot of brackets ripped off and premature bushing wear from this problem because that force has to give somewhere. If you don't offroad, no problem though but then you didn't need new CAs anyway. Glad you're happy with the lift. It does look good.