first digit is year #2 is assembly plant #3and4 body series #5 is engine size. b=240 c=429-4bc360hp d=302 e=240 f=302-2bc g=302-4bc[boa]h=3512bc-250hp j=429cj 4bc k=429 2bc l 250cid m=351 4bc n=428 4bc p=428 police q428cj 4bc 225hp r=428 cj ramair y=390 2bc z=429 4bc boss 375 hp.

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