How important are the seat pan risers to the structural integrity of a 66 coupe? I bought set of 07 Shelby seats but they site too high on stock risers. I was going to do the pan drop but I don't think that will be enough. I want to keep the power setup for the drivers seat so modifying the seats to use the original tracks is out. My thought was to weld 1" sq. tubing across the actual pan and bolt the seats to them. Any thoughts?