I agree with gtos, I believe the M-22 was available in Chevys in 1970 and before (back to 1966 I think) but only available in Pontiacs in 71 & 72 behind the 455 HO's.
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Dick Winkles
1970 RAIV GTO 4-speed
1974 Original owner Z-28 4-speed
2008 SRT10 Viper Very Orange (was SD TA!)
2015 Challenger Hellcat 6spd (was SD TA!)
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