I watched the 4 days of the Monterey Classic and found a recent series where they race the "70's Trans Am cars. Cars are originals and suspension and tires are strictly regulated to the era. I looked for a Mopar Performance Trans Am bulletin liked they had for drag racing with no luck. Did the 70's Nascar have to run the stock suspension? I figure that these 2 venues might be a ticket for much info. I have have an opportunity of putting my hands on a '66 Dart. That solves the weight issue.73+ UCA/LCA, spindles and 1" front torsion bars, might get me closer.