I did see one some time back but it was one of those days that was not a priority so I only gave it a quick glance and grabbed the brochures. I went back today and it is gone. I do not remember it being any less crude than than other items KK builds--none of them very pretty but fairly rugged. Looking at the weight the XB cutter is 401 lbs and the standard 48 inch cutter is 420 lbs. The unit I saw had to small tailwheels that may be a tad small, two full length frame rails and 3 point spacing better suited to the BX. Since there is a 20 lb weight difference obviously something is missing or there is thinner metal somewhere. I suspect the XB unit will do fine for light duty use and grass cutting, those who wish to get into the rough with their BX might should opt for the 48 inch standard cutter. It is fairly simple to lower the pins and turn them in and the BX will handle it with the FEL left mounted or front weight.
All of the KK stuff seems a bit crude but then it is value priced and seems to work well and be durable, not sure orange paint would help. J