@ Vince.. Year to year there are very subtle differences, for example 66 had the deep tufted seat and 67 had the silver mylar stripes on the seats. I like to be very close to original but that said I don't worry too much about what other people are going to think because it's my bike. Remember that back in the day someone could have bought a brand new bike off the showroom floor and then requested upgrades or accessories that could have been from different years or models, and bike shops had plenty of replacement parts back then. Here are two original 66 Stingray's, a fender-less 3 speed deluxe and the deluxe with fenders and white grips is mine. This is good reference for you since both bikes are all original. I ran into the guy with the 3 speed at the LBC swapmeet.