here is a lvt4
LVT(A)-4 (1944)
The 37 mm gun of the LVT(A)-1 was inadequate for fire support version so the turret of the 75 mm Howitzer Motor Carriage M8 – armed with a 75 mm howitzer – was used to produce the LVT (A)-4. In some cases, the 75 mm was replaced with the CanadianRonson flamethrower. A single .50 cal machine gun was installed on the ring mount above the turret rear. In the late production vehicles, the heavy machine gun was replaced with two M1919A4 .30 MGs on pintle mounts and one more in the bow mount. 1,890 units produced, and 1,307 were transferred to US Army and 50 to British
Army.
The Chinese PLA captured several from Nationalist forces during the Civil War and placed them in service, eventually modifying some by replacing the 75 mm howitzer with the 37 mm M6 tank gun and others with the ZiS-2 57 mm anti-tank gun, complete with shield, the conversion also necessitating the removal of the original mantlet.