66 fender tag decode, think I have a clone

I have all of that dressing on my car also, valve covers, air cleaner, 8 3/4", disc brakes, commando emblems, but I put it all on there and don't try to fool anyone! I have the emblems on there because it is an actual 66 Commando motor that's in it, and I feel I can badge and dress it that way!! If your fender tag says its a 2 barrel 273 car, that's all you need worry about, unless you're adding the Formula S badges and trying to present it as such, which obviously you're not!! Just cause Mama dresses up for Daddy don't mean nothing to nobody!!!!!