That sounds like an ugly as sin tankMy thinking is that ITTL the US was the first to use sloped armour ( I think I remember Turtledove mentioning sloped) . The suspension came from a Sherman and the upper hull is the front half of a T-34 and the back half is the rear end of an Sd.Kfz. 234 armour car. The turret is half PT-76 and half 234 armour car again, the gun is a 75mm.