When looking at a set of spindles and calipers, how can you tell if they are 94-95 or 96 and up? I did not see any information on that on the different sites of brake upgrades. I also saw mention of a spacer needed or a stack of washers needed since the fox ball joint is longer than the sn95. Where can I get this spacer? Can the stock Fox ball joint be pressed out and an sn95 balljoint be installed in its place. Thanks.