Pretty rare, I've been on this forum for almost 8 years and maybe seen 3 of them. The rarest of the rare also have the plexiglass windows built into the hull in the forward compartment that allows you the glass bottom boat experience to look into the water. The combination of the diver door and plexiglass panels are very rare these days. I'm sure they're still out there sitting in a yard, waiting for a new home.