seems to me its ambitious building caster into your arms without getting your ride height sorted. Of course you can always make your ride height that 4inches your going after. Use your lift height and the pivot length of your RA in a sinusoid to get an idea of how far positive your caster will be. You can always say f** it and make the mounts to the proper location after this beast is bolted in the pivots and at ride height. I"ve read placing the flat surface on the front of the beam vertical produces the desired 4-5 pos degrees of caster you want, can anybody validate this?
The math for this isn't as straight forward as for camber, i'll do some thinking. I say this because a stock RA and a lengthened one will produce more and less caster change respectively. Anybody else have input here on the math side of this junk?
But its lookin like time to throw those beams under your dez jumper there.