SO-122 M-4 Self Propelled Artillery

The SO-122 was a Yugoslavian project mounting a Russian 122 mm gun into a turret on the Sherman it was based off of the M-634 tank. The project was cancelled after the gun was not able to elevate high enough for the artillery role. The vehicle could carry 27 to 30 rounds of ammunition for the main gun.
Variants:
1.
Name: SO-122 M-4
Type: Self Propelled Artillery
Origin: Yugoslavia
Year: 1961
Produced: 1

Length: 6.273 Meters
Width: 2.997 Meters
Height: 2.971 Meters
Weight: 33500 Kilograms
Speed: 50 km/h

Crew: 5

Primary Armament:
-122 mm A-19
Secondary Armament:
-7.62 mm M1919A5

Gun Flexibility:
10° Elevation
2° Depression

Armor:
-Hull
64 mm Upper Front 108 mm Lower Front (to 51 mm lower front)
38 mm Side
38 mm Rear
19 mm Top
25 mm Bottom Front 13 mm Bottom Rear
-Turret
100 mm Front
50 to 45 mm Sides

Sources:
http://www.paluba.info/smf/index.php?topic=22813.0;wap2
http://www.theshermantank.com/category/lee-and-grant/
Hunnicutt-Sherman