Extremely necromantic reply, but I wanted to pipe up, because not a lot of people have these. I got his aluminum ones and finally was able to get them in a few weeks ago.
Are you or you + good friends you can bribe with pizza okay with dropping a steering rack. If so do it * 1000. My only mods are wheels/tires, RMM, side mount inserts, and these bushings, and it feels dialed the ^&*(# in now. The steering loads up like an old car whose steering people miss. It feels better and more precise, too. Vibration is almost nil even with aluminum ones. For minimal cost and negligible downside, you get feedback to match response.
Dropping the steering rack was a stone cold nightmare for me, so I wound up having my mechanic do it. Still worth it (to me).