There are two rigs there.

 

I was helping a mate put superpro poly's in his D2 a few weeks ago, pita to remove the old bushes but the poly's go in easy, the range of movement is different from the D3/4 wishbones where they swing on the bushes and the D1/2 hardly move at all.
I used poly's once in my old RRC and never again, those things fused solid in the arms and had to use an acetylene torch to get the effers out.
I'm about to do all the bushes in my D3, got a full set of Lemforder and Meyle ready to go in plus a TRW track rod kit.