Need a new premium Sherman with Big Boomstick: SO-122

Lert: In the late 1950s the Yugoslavs experimented with some leftover Shermans they had. One experiment they did was fitting the Soviet V2 Engine from the T-34 into the back of a few Sherman hulls for additional oomph. This became known as the M-634.   Then in 1961 they put a Soviet A19 122mm gun into a modified turret, and called it the SO-122.     The project was eventually canceled because they couldn't get the boomstick to elevate enough for indirect fire.   That said ...