Please do NOT undergun it they way they did with the Sherman.
The Sherman wasn’t undergunned when it was designed and put into production. The german panzers invading france sported 37mm guns and 75s with very short barrels. The Panzer IV didn’t get a decent 75mm anti-tank gun until 1942 after the T-34s were hitting them hard in the east.
Those undergunned sherman stories are mostly late 44 and 45, when they were going up against German tank guns that didn’t exist in 1940-41. Even then it wasn’t that our guys were morons. Production was so overwhelming that they cranked them out even when it was outgunned and upgraded the 75 we had on it.
The Sherman kicked ass in one area, speed and mobility. The German tanks were wretched in that regard.
Then instead of trying to design a new super tank like the blockheads did, we simply cranked out 15,000 P-47 Thunderbolts and played a different game.