Ram I

Instead of waiting for redesigned M3 Mediums to be delivered by the United States (which would emerge as the M4 Sherman), the British Tank Mission collaborated with the Canadian General Staff to design a modified M3 for production in Canada. It would retain the standard M3 power train and gear, but the hull and turret would be an entirely Canadian design.

The new design was expected to use the British 6-pdr gun and mount. However, when the Canadians initially failed to acquire these guns, the first 50 vehicles would be given the 2-pdr already in production. The tanks armed with these 2-pdrs were the Ram I, while the Ram II would eventually receive the 6-pdr in time to enter production in January 1942.

In World Of Tanks, the Ram I would barely be able to even penetrate itself with this weak gun, so we need to put it at Tier IV. However, the vehicle is decently mobile, armored, and heavy for its tier. So it would be fairly decent at ramming (pardon the pun).

Guns: QF 2-pdr Mk. X

Engines: Continental R-975E-C2 (400 hp)

Turrets (Turret Armor (mm)): Ram (76/64/38)

Suspensions/Alternate Hulls, Total Weight (metric tons): Ram Mk. I VVSS (29.02)

Hull Armor (mm): 76/76/64

Top Speed: 37 km/h

Crew: 5 (Driver; Gunner; Loader; Commander; Radio)


See Also: Ram II, Ram GC

Sources:

Hunnicutt, R. P., Sherman, 1995

http://www.tanks-encyclopedia.com/ww2/canada/Ram_Cruiser_Tank.php

http://ftr-wot.blogspot.com/2013/04/commonwealth-uncommons.html 

http://www.ramtank.ca/