You can run them both ways, check out Tebo's car.
http://www.neobuggy.net/2013/10/04/u...ups-2wd-top-3/
Mounting the arms this way gives you a shorter wheelbase, more weight over the rear end.
If you mount them the other way (Kev Lee style) you have to mount them on the outside of the hole or the shocks will be at too far of an angle.
