I am looking to try and fit rear headrests/ highback seat to make it safer for my children. but am not sure of best route to take.
I own a 1989 T25 Autosleeper. I have the original fitted rear seats. The rear seats in the autosleeper conversions are not the metal rock & roll bed, but are basically two hinged pieces of plyboard, one forming the base and the other which bolt in place using a normal 'drawbolt'. and manually folded flat to make the bed base. I suppose back in the day these and lapbelts were deemed adequate.
I had three point seat belts fitted a couple of years ago, and my 8 and 10 year old have been travelling in high back child seats. The elder is now fast approaching the height that means this is no longer suitable and will need to sit on the standard seat. the problem is that with no headrests, his head and neck will now be above the seat back.
I am sure I am by far not the only person with children who travel in the back and who are too tall for the standard seat to give head support.
Have any of you made alterations to this type of seat to either add headrests or raise the height of the seat to allow head support in the event of an accident? Also have any of you upgraded the 'bolt' system for something that probably woudn't sheer the self tapping screws in the event of an accident?
My initial thought for the headrests was to attach some headrests from a scrap vehicle, ( I have seen a post of someone welding headrests to a metal rock & roll bed ). Or secondly, forming a new piece of plyboard but making it about 8 inches higher and replacing the original plyboard seat back, then adding some upholstered foam to form a headrest above the original upholstered seat back. ( with a bit of additional jig-sawing of the base front edge it would still all fold flat for the bed)
Also, does anyone know if, on making an alteration to the seat by changing the back for a taller one to incorporate a headrest, it would then become an insurance issue or would have to meet certain seat test specifications, even though it is still going to be a safer option than the original 'draw bolted' seat with no head protection. I am with Adrian Flux who are quite accommodating of modifications, and I will approach them, but I was wondering if anyone has already come across this issue?
It would be a shame to have to consider selling on our much loved camper if we can find a solution to allow us to continue to travel with the safety of our children in mind. ( I know we can try and drive safely, but no matter how safe we all try and drive, we are all still reliant on the people coming the other way doing the same!! ).
I would welcome any advice or previous experiences in this subject.

Many thanks
Ian