Alex -- nice progress! Regarding the Moog Problem Solver UCA bushings, I'd highly suggest installing them into FF tubular UCAs... I know of someone who did that and they got ~ +7 caster... that is far better than most any UCA can offer (perhaps with the exception of the Hotchkis and SPC designs). If you can skip the factory stock UCAs and get aftermarket.... adding the Moog offset bushings is a base minimum, but, as long as you've gone this far (UCAs removed)... take advantage of this opportunity and do yourself better.