Could you make the T-34-76 from 1942 be like the one from 1943 but without the cuppola?
The "mickey mouse" T-34 is one of the most famous types of T-34 because it was the one used during the battle of stalingrad yet it's not in your mod.
https://i.pinimg.com/originals/14/12/68/141268692177ca0f061acdc9a804b609.jpg
https://i.pinimg.com/originals/f9/55/fb/f955fb8cbd814485c95623b4f2a85cd1.jpg
https://ww2aircraft.net/forum/attachments/pol-t-34-jpg.384266/
Here are some examples.
They started production in 1942, but they were nonetheless called the model 1943.
They were later retro-fitted with a cuppola in late 1943, which is the 1943 tank already in the game.