Well they do make a difference! The only difference i can see looks to be the bolt is in the cam on a bit of an angle rather than square in it, that probably doesnt make sense, sorry i didn’t get pics. I used the rear cam only on each side. Then when i cranked it for more caster the upper ball joint moved back maybe 3/8ths or more, probably closer to 1/2 “. If i did the fronts as well it be even more. What ever the difference is it worked, so the offset bushings and these combined should give pos 6 castor. When I eventually get an alignment ill update the thread 👍🏼