I've got a dual gate in my 71 Cutlass convertible. The option is very desired, but 172? Check out e-bay. There are at least 1 or 2 on there a month (original, not dual gate 2s). They were also put into GTOs, but the shift arm was straight, not curved.
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Home of the 1971 Cutlass Supreme convertible Super Karate Monkey Death Car.
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