1966 Gts?

66 gt yes, 66 gts ? - no, not that I'm aware of. If you have the build sheet, save that and use as reference when you restore. I'd get it laminated in plastic, these sheets are usually really flimsy and beat. You should be able to get all the codes deciphered using the "little white book" for your year car. As far as options those should be included on the build sheet and or the fender tag. Disc brakes, 4spd, red streak tires, hd suspension and sway bar were all options. I am not aware of there being quick ratio steering available. The others might have been in a package, but I dont know that.

Maybe someone else can help out more.