proshiftcharger
After Barnett converted the 68 SS/AA Dart to prostock in 1970 I don't think they had another a SS car. They did cars and engines for many teams and at one point had over 30 Hemi cars with Barnett Automotive power. They were in NHRA Prostock a few years then in the 90's tried IHRA PS. The 70 and 71 Cudas you refer to were likely those of Steve Bagwell. The 71 won Indy in 1973. Bagwell cars ran in SS/AA, SS/BA, SS/CA/ SS/DA, SS/EA, SS/KA and B/SM as well as Pro Stock for many years. They actually ran out of the same building.
Hopefully the Barnett SS/AH cars will be out next year. There are actually two cars but only one has been tested so far.