Christmas gift to myself... lol. I had found a used set on ebay for about $250. They're from Performance Online. Not the most well known brand, but I figured for the money, I'd give them a shot (they're $350 new). https://www.performanceonline.com/1970-81-Chevy-Camaro-Tubular-Upper-Control-Arms/ Just installed them today. Haven't done the wheel alignment yet (basically just stuck the same shims back in that were in there before). But all I have to say is WOW!. I was (I guess I'll say) "cautiously optimistic" about how much of an improvement UCA's would give me since the car already handled really well. But even without the alignment done yet, they've exceeded my expectations. Everything about the front end feels far more precise... the steering feel (even with my worn out rag joint), the tracking down the road (better resistance to "tramlining"), the way the car handles bumps, etc. I guess the increased caster, the greasable delrin bushings, etc, all add up to much better performance. I'll be doing the alignment tomorrow morning. The only complaint I have is that their ball joints suck. I stripped one of them with the castle nut just at the minimum torque value. Almost couldn't get the damn thing off. So swapped in my old ball joints (which were only a couple of years old anyway). But overall, so far, very very happy with the results. These UCA's seem to compliment the G-braces very nicely. I can imagine someone doing G-braces and UCA's at the same time feel like they've gone from a model-T to a Ferrari (very tounge-in-cheek, I know, but these two items are a phenomenal improvement over the factory setup). Once I get my rag joint swapped out, it should be like a brand new car.