Proturing or roadrace rear suspension

My hats off to you Jo diesel. Nice setup, its very similar to mine. The original question was what suspension works BEST for protouring or roadrace/autocross. The reason why I suggested a torque arm setup is because its what is favored in the roadrace and autocross world (not just mopar's). Google Mike Maier and whitness his mustang w/ his own torque arm suspension setup along with the stack of 1st place trophies spilling out his trunk. I believe its the best system, not saying that torsion and leafs dont preform well, but I don't believe they are the best.