Only a few made. VW and a bus box. I just caught a triple seater at the Camp Pendleton Mechanized Museum a few weeks ago (I’ll post up more pics of this, the razr, various military dirt bikes when I get some time). It was still configured as the triple seater with the lower passenger firing off a grenade launcher and the mid/upper passenger rocking the .50-cal.
That one on FB seems a bit high for most people but if you were looking for a piece of military history or one of the few that actually used one of these in combat it’s a steal. Rob at Warfighter Made was in one and they were able to acquire one of these, believed to be the same serial number as what he was in. Theirs has been raced in several desert races.