I have been looking at how to fix the rust issue...
It seems that this is a weakspot on all Dodge vans..
On BigB its made worse by the fact that the Cap does not follow the roof shape, and they "fixed" this issue by putting sealant in the gaps... which held more water, and made it worse!
Here is the extent of the issue... its pretty bad, but the repair and solution is a big improvement!
Roof rust..
From inside you can really see how bad it is!
Drivers side gutter..
Now, here is the basic plan...
The current roof cap will be coming off to repair the rust.
I plan to cut out the front roof section, where I need to, make repair sections for the rusted areas. Then I will make a tube that runs around the whole inside of the roof gutter to replace the lost strength, and this will have 6 legs that extend to the floor with foot plates, forming a chassis stiffener/roll cage. I think 3 cross beams as well.
The current roof cap will be remounted at the front, adding headroom, and I am gonna find a suitable "Taller" cap for the rear.
I have already been searching junkyards for the new roof cap.
The two caps will be modded to fit together and I think I will cut and glass them into one.
This plan will give me increased headroom, better chassis stiffness and solve the rust issue!