Yes if not even stronger. Gonna build technically a roll bar out of 40mm box and weld it to B posts then everything will be built from that then I'll build a sort of ladder type frame out of 30mm box for the base of pickup bed but I will incorporate them into the inner arches/wheel wells again welding everything, no bolts and to top it off I'll be welding in a mk3 golf hatch back complete tailgate to B posts aswell, I've done a few measurements and I reckon the mk3 tailgate glass should look good.
Going to take some time but the rear doors are now prepped to be welded up so instantly gain strength there.
Considering some of those posh chassis braces for underneath but I'm reckoning it won't need them and they are pricey
