yes its definately steel caged, about 5/6mm rod cage. id guess the plastic is only 3-4mm thick. I could weld up a strong steel frame to bolt to the chassis, out of box section, and steel sheeting, dont know whether to just get a baffled flat 1000 instead.
Yeah i was going to fill it with plastic tubing like drain pipes to baffle it, but i guess its not worth it. I doubt it could turn the trailer over, its wide & twin axled 2 ton capacity. I just thought i might be able to get away with a cheap 1000 tank instead of the 300 or so for a flat baffled.
Ive seen some picts with people using ibcs in their vans.