Re: IHRA classification guide
80 Z/28 = 180/ 238, 14.35 break= natural M class.........80 Berlinetta Z/28 =180/238 , 14.55 break = natural N class........81 Z/28 not listed. only Berlinetta & camaro listed = 155/241 ,14.31 break = natural M class ,regular camaro is same hp with a 14.08 break . Hope this helps.
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Danny Waters, Sr / 73 Duster "340"
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