I recently picked up a few more Sun distributor testers, in addition to my 504, I now have an SDT, MDT-50, and a 600. All have cabinets, and two in particular look quite nice. I will probably keep the 504 as it will do electronic distributors, and maybe one more and sell the rest. Haven't checked them out yet, but know how to work on them and get parts. When I know more, I will offer them. They make excellent garage art, but even better when they work