The easiest way is to order PHS docs, Then you will know exactly everything that your Pontiac was ordered with, well worth the investment in my opionion. Visit PHS [url]http://www.phs-online.com/[/url] Also you can try decoding some of it yourself, VIN Number Decoding Location: Attached to the left-front door pillar Sample: 223377U100001 22337 is the model number. 1st digit is the GM division number. 2 = Pontiac 2nd digit is the series number. 2 = Firebird 3rd digit is the model/engine number. 3 = All firebirds manufactured in 1967. 4th and 5th digits are the body type and number: 37 = 2dr coupe 67 = 2dr convertible 6th digit is the last number in the model year i.e. 1967 7th digit is a letter indicating the assembly plant: U = Lordstown, OH 100001 is the sequential production number. These numbers fell into two ranges to differentiate between V-6s and V-8s as shown below. Engine Body style Code I-6 Coupe 223377L600001 and up I-6 Convertible 223677L600001 and up V-8 Coupe 223377L100001 to 600000 V-8 Convertible 223677L100001 to 600000