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Message: <blockquote data-quote="RichV" data-source="post: 1325291" data-attributes="member: 17007">Speaking from CMC rules, I cannot go with a T/A. Per rules, I have to keep the UCAs.This year, I was set on aftermarket arms and spherical bushings in the back. In the end, I was doing exactly the opposite of what MM recommends. So I took a step back and got a set of the FR UCAs and a new set of MM axle bushings. Luckily I found all of them new from never installed projects on craigslist and ebay. Basically when you stiffen up the LCA the deflection will go somewhere. Ideally you want it to be the UCA/axle bushings. If those are stiff, you just tear up the torqueboxes. However, I know CMC guys replacing the bushings and UCAs almost every season. I tried running a PM3L in 2013 and it did not do well. The combination of the deflection going into 2 worn out bushings versus 4 was actually rolling my rear axle causing it to be not centered. And it was messing up all sorts of stuff.I believe with a good performance alignment my front end is sorted. Changing gears to 3:55 or 3:27 and getting the axle bushings will finish off the rear end.</blockquote>