you can find bushings that are damn near any size, all you have to do is look around. a quick search of Energy suspension bushings gave me this info... they make all these bushings in all different sizes and even different bolt shank diameters... the narrowest was 1 3/8" and the widest was damn near 3" - so there are a variety of sizes you can get.
Outer Tube Dimensions
Inner length minimum wall thickness
Dia.
1.125" 1.062" 0.125"
1.125"
1.037" 0.125"
1.125" 1.480" 0.125"
1.250" 1.312" 0.187"
1.250" 1.312" 0.187"
1.375" 1.650" 0.187"
1.500" 1.960" 0.250"
1.500" 1.960" 0.250"
1.750"
2.550" 0.250"
1.750" 1.350" 0.187"
2.000" 2.075" 0.250"
Inner Sleeve Dimensions
Outer Inner length
Dia. Dia.
0.750" 0.500" 1.400"
0.750" 0.562"
1.375"
0.812" 0.625" 1.750"
0.750" 0.500" 1.750"
0.750" 0.562" 1.750"
0.875" 0.500" 2.250"
0.750" 0.500" 2.375"
0.750" 0.562" 2.375"
0.875" 0.625"
2.930"
0.875" 0.562" 1.850"
0.875" 0.625" 2.530"
From SD you can get these weld on studs for making your link bar ends
you can weld them to a super pivotlike this one
or you can buy the bushings
and buy some DOM tubing and weld the stud to the DOM for your swappable superpivot/bushing. all you have to do is unthread one and insert the other.
Granted that's a whole lot of work, running around and what not. it's probably not worth it (to me anyway) but you could do it. i'm also not saying that energy suspension has the right size bushing to fit your application, but it was an example. just cuz SD doesn't sell the right size bushing doesn't mean it doesn't exist.
not trying to start anything, but i'm just saying it's possible.