GMLC- the only 7 Iron deck are the stamped ones. I knowo they make a fabbed rear discharge deck that is 7 gauge or heavier for some of the bigger machines like the 997 and I think the 1400/1500 series. Yes, Deere does incorporate a lot of their tractor technology in their ZTR's. In fact,, their new flex forks are based on their suspended and independant front axles in the mechanical FWD farm tractors. The forks are easily as strong as anything on the market today. If boxed steel were the strongest design, all the ag tractor manu's would use it instead of what? Wait for it..........CAST IRON.