I bought a 1966 CJ-5 about 5 years ago and have just started its restoration. The "ID tag" was missing from the firewall when I bought it. Upon removing the tub and all parts exposing the frame we found this number (785659) stamped on the frame, top side, right above back spring mount (front wheel) on the passanger side. It seems to have too many digits and be too high to be the Jeep's serial number. Does anyone have any information about how this number might have been originated or how it relates to the serial number of the Jeep?