I did not have any round tubing , all I had laying around was some 1.5 square box tube. I clamped this up to see if this a workable idea. The outside edge of the box corner was hitting the airbox. A 1.5 dia round tubing should have clearance. I have a spare 5-point harness off a older buggy I had years ago, I plan on getting some 1.5 dia round tubing later this week and clamping it into place and clamping the shoulder belts to it so I check that every thing lays out OK. I think this should be workable. I will have to cut the cargo bed plastic where comes to connect the wall behind the seats in the buggy. I plastic I will have to cut will be where the big cover lid goes on that covers the oil tank and air cleaner box and the storage compartment with the screw on cover. I see no way to get a bar in at the correct height with out cutting plastic.