I thought about that, thanks.
The inner panels on my doors are screwed on so if needed I can get to the inside of the doors and add reinforcement. I believe I can frabricate what I need but for this it seems easier if I can find kits somewhere.
Maybe I'll try to find a greyhound bus graveyard somewhere. I've seen some of those doors open up parallel to side of the bus.
2002 Four Winds Infinity 37', 2 slides, F53 with V10, 22,500# chassis, CHF. 4 of us and a German sheperd.