Made some more progress this weekend. Had tried to use the cement truck chute welded together but had too much trouble getting it done since they had tapered the roll on the two pcs, it was about impossible to measure from any straight lines to know where to cut. So, I went out and bought new 12 gauge (0.100" thick) and had it rolled. After rolling, I had it bent in one place, the result is in the attached photo. This turned out really great, one pc of metal forms the entire housing, minus the end caps.