I am not a Pro Stock historian, so please correct me if necessary. I would think that Grumpy would have had the latest in Cragar wheels on his cars. His second gen. Camaros had S/S wheels which would have carried through the '71 race season? When he debuted the Vega it had S/Ts which would have been the '72 Pomona Winternationals? If this is fact it would pin point S/T introduction as late '71 to early '72. Any other opinions?
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