Yeah my GQ was well held on and I incorporated those points into my rear bar when I made it.
I was shocked though when we pulled Healy's hook off to find it was held on by very little and the bolts certainly needed replacing. I note now though that we also saw that his rear brake line was fully rusted and as it turns out his Chassis rear end had Catestrophic rust that deemed the car a total loss. Disappointing. I wonder then if his fixings were not representative of most? My GQ certainly was well fixed. There is a cross brace from that fixing going above the fuel tanks diagonally to the chassis rails on both sides.