DVAP recently moved much of their stock, including all Rivs, from the Deer Valley (Black Canyon) location to Casa Grande. Unfortunately, they do not have any 1st gen Riv balancers.
"As of now the pre 656' inventory along with ALL AMC, ALL IHC, ALL CORVAIR, ECONONLINE, ALL TORONADO, ALL RIVIERA's ALL GM "G" BODIES, GM BIG BODY 77 and up, are at our south location, Casa Grande. ...contact them direct toll free 800-798-2465"