Actually, both of you guys are somewhat incorrect. First, both advertise in Mopar Action, and I could find neither company advertised in recent issues of muscle. Second, while they do offer adjustable upper arms and will take custom orders, I'm talking about a bolt-in, ready to go UCA that requires absolutely no thinking. "Install this upper arm on your (fill in the blank) mopar with the tall spindles and you will have the same geometry as if you used your stock or 73-76 a-body pieces." That's what they need to market, and they might even already make it. But that kind of advertising is what's going to sell parts. Then everyone wins.