Comprehensive Chevrolet, Saturn, GMC, Hummer, Cadillac, Buick, Oldsmobile, Pontiac, Geo, Dodge, Plymouth, Jeep, Chrysler, Ford, Lincoln, Mercury, Mazda Truck, Mercedes VIN Decoder
GM VIN decoder
i guess according to this thing my GTP is 1 of 2. with 2 more being equal plus other options.
post up what your car(s) are.