I want to update the rear suspension of my 67 Chevelle, but with so many choices, can't decide what to do. Alf Wiebe, Dick Miller, UMI, Wolfe, and the list goes on. Need some suggestions from you guys. It's a race only bracket car, no street. Currently big block automatic running 11.80. Eventually will have a 4-speed, bigger cube motor, hoping for mid-10s. Don't mind spending some $, but only want to do it once. Thanks for your help!