You mean Ingalls?
Doesn't just everyone sell that?
Last I looked it was $16.50 per side for the single-eccentric ones from a local auto parts store. The double-eccentrics were quite a bit more. You only need the doubles if your alignment is going to change quite a lot, frequently. Otherwise, it's worth it to just buy singles.
I have the Ingalls double eccentric bushings in my Ranger's D35.
I got mine from NAPA, don't remember the NAPA part number.
I believe the Ingalls number is 594.
But for the record, the double eccentrics are limited to a maximum
of 1.5degrees.
If you need more adjustment than that you will have to go to the
larger fixed bushings that are made as large as 2.75degrees.
THE point of the double eccentric bushings is that it allows caster and camber to be adjusted independently, so if you very specifically want no caster "stagger" while the camber is adjusted correctly you can do it by moving the cams.
Otherwise it's a LONG trial and error process by using different came in either side and "Clocking" one (or both) to adjust the camber and caster where you want it.
Personally I want the camber at -0- and as much caster as I can get
without having a caster stagger (stagger is the caster being other
than equal side to side)
Though my alignment preference on a Ranger is more about straight line stability and low rolling resistance, I do an awful lot of long runs on the interstates...
AD