Fair enough. The concept is certainly doable, the only real issue is which system would be used and would the purse strings be opened wide enough, early enough for it to be useful (bugs to work out, limited numbers on the battlefield, etc).
Once the war had been raging for a while and a few spare M1 bodies were laying about, I can see field mods springing up. Throw a towed 20mm PIVAD, captured ZU-23-2 or even a 40mm Bofors on where the turret used to be, strap it all down with chewing gum and fencing wire and you've got yourself an effective infantry destroyer.
Might even see some armour plating bolted on here and there to try and protect the gun crews a little.