The point of this is that any branches that would normally hit the screen will instead contact the steel bars and be deflected up and over the cab, effectively protecting the windscreen from the branches.
i started by removing the corners of the cab and attaching some 40mm x 6mm steel directly to the chassis of the cab, this only has to support the 40mm box section upright, i used 2mm wall thickness here to keep the weight down on the cab. Bearing in mind i will be adding two massive seats and two more seats as well.
the brackets on the cab will be bolted to the uprights with m12 stainless bolts and locknuts. there will be a n additional bar going horizontally between the two uprights at the bottom of the windscreen, this will serve to mount some LED Light bars onto.