Is that the standard spare tire mounting position?
That I don't know. PO said he picked up the bracket at a swap meet and I assume it's pretty close to position because it matches the rear fender. Honestly, I don't even know if 67s had a side mount. I've always liked that style though.
He also relocated the fuel tank behind the rear axle, thus the filler hole in rear fender. His main reason for the heavy hitch receiver is to protect the tank.