The first version had been to slap a turret from an obsolete Saladin Armored car, on TOP of a 113 carrier and call it "the Beast". It actually worked, but it was too heavy to "swim", except in a downwards direction. There were still a few floating, (or not, as the case may be), around in the late 1970's.
I had the opportunity to work with those in '77, they didn't do too much but fire support having 2X1919A4s in them...but they were neat because they were different from ours.