Did some more investigation on the holes at the rear of the tub.
https://www.aulro.com/afvb/images/im...009/07/568.jpg
https://www.aulro.com/afvb/images/im...008/12/373.jpg
The holes seem to have fixed something on the outside of the vehicle. The mount on each side has the same hole configuration and is about 18" long by 4" high. The difference seems to be in the positioning of the brackets, on the RHS the forward lower bolt uses one of the holes for the antenna bracket, but straddles the antenna holes on the LHS.
Could this have been to mount cable reels on the side of the tub or something?
Any other ideas?
Diana

