this what i found so far
Vehicle Identification Number Example: 1Q87L2L100000
First Digit Division: 1=General Motors
Second Digit Series: Q=Camaro (1972-9), P=Camaro (1980), S=Type LT (73-78) or Berlinetta (79-80)
Third & Fourth Digits Body Style: 87=Sport Coupe/Camaro
Fifth Digit Engine: See Engine Codes Below
Sixth Digit Year: 3=73,4=74,5=75,6=76,7=77,8=78,9=79,A=80
Seventh Digit Production Plant: N=Norwood,Ohio, L=Van Nuys
Last Six Digits increase by one with each car built at each plant
1972 to 1980:
1st digit: GM line number
•Chevrolet = 1.
2nd digit: Series number:
• Q = Sport Coupe
•S = Type LT (1973 – 78)
•S = Berlinetta (1979 – 80)
3rd and 4th digits: Body type:
•87 = Sport Coupe.
5th digit: Engine Code:
•See specific year (Camaro info) for breakdown.
6th digit: Last digit of model year:
•3 = 1973
•4 = 1974 and so on
7th digit: Letter indicating assembly plant
•L = Van Nuys, California
•N = Norwood, Ohio
8th through 13th digits:
•Sequential production number starting with 100001.
thats all i could find dont know for sure but think you need to go off the trim plate that give paint color ect because was a trim/styling option