I've never seen a 56 box mounted like that(in my many months of 32 ford experience LOL). But it looks like it gives you much more clearance with it above your frame instead of through it. Was that a 59 truck pitman arm? My wishbones look alot Longer than your hairpins(they are 42") and meet the 32 frame past where ity starts to widen and this tends to put them further outboard..