That is a cool tank, AD.
I think...right now I'm looking at a "Cadillac Gage Stingray Light Tank " in
Janes's Tank Recognition Guide. Is the Stingray II much different?
I'm sure there's no injection kit out there, but there's bound to be a resin kit.
Sorry, I know that wasn't very helpful at all!
Perhaps if you contacted Abe Froman, Sausage King of Chicago, you could find the information you seek!