You still miss my point. I am not talking autocross or road racing. Been there done all that. I'm talking about a street car you can drive all day long, be rock solid on the road and easily take any corner one would encounter on a real road. If the OP starts with a factory HP suspension, rubber bushings and all. Replaces all loose components, and torques everything to spec, and gets a good alignment he would probably be happy. Especially compared to the nothing suspension they put on /6 cars. When I did the 66 I wanted to go back to original, but was pleasantly surprised with the result. No need to worry about last century, I've put 250,00 street miles on a 96 Neon ACR. I've driven Porshe, Vettes, 2009 Challenger R/T, the 66 Formula S does fine with the original leaf springs, control arms, front sway bar, Bilstein shocks, 16:1 factory manual box, and whimpy .88 torsion bars. All that being said, The rebuilt suspension on the 67 Barracuda will replace polygraphite bushings with rubber. The only trick pieces will be Firm Feel upper control arms with rubber bushings, a roller bearing idler arm, and a 20:1 manual box. Everything is a compromise somewhere. I've done my time with polygraphite and high dollar for little gain stuff. What you want is not necessarily what I want.