Because the guy likes to hit sides/3-wheel. And I like heims, as long as they are nice ones. I always run a bushing at the frame though, for a little cushion.
those lowers are bad ass. when you said you were using a combo of different joints i was wondering if you were doing something similar to this. that is just bad ass man.
i really like the triangulated bars to have the bushing parallel with the rear axle. i've seen a few setups like this that look nowhere near as clean! props on detail.