Haven't seen one in over 15 years. You could take a current fisher or western and make extensions for the top and do basically the same thing. Remember to have a big truck because the old diamonds were extremely well built and very heavy. Adding weight to the new plows will probably push them into the 950-1050 lb range. Jerre
Jerre's correct about them being very beefy. Saw one last week plowing the UPS lot next to where I plow. It was on a late seventies ford with a fisher frame that must have been "tweaked" to carry that load. The guy also had a 2.5 yd spreader on the back (I'm guessing just for ballast )
One of the current upper people at Boss worked on that plow when he was with Diamond plows in the 80's. He mentioned that in order to keep the plow from bending they just kept adding steel that added weight, making it easier to bend, and it just became a viscious cycle. Add the fact that the truck makers started lowering front axel weights, and the plow was doomed.
Boss finally made a v plow that worked, and fisher western has brought the v plow to highest level for light trucks IMO.