ISU-122-3/Object 251 Self Propelled Artillery

The ISU-122-3 was an extension of the ISU-122. There were two ISU-122-3s but they were based off the same vehicle.
Variants:
1.
Name: ISU-122-3 (ISU-122S)
Type: Self Propelled Artillery
Origin: Soviet Union
Year: 1944
Produced: 675

Length: 6.8 Meters
Width: 3.56 Meters
Height: 2.52 Meters
Weight: 46000
Speed: 37 km/h

Crew: 5

Primary Armament:
-122 mm D-25S
Secondary Armament:
-12.7 mm DSK

Gun Flexibility:
20° Elevation
3° Depression
3° Left
7° Right

Armor:
-Hull
90 mm Front
90 mm Side
60 mm Rear
30 mm Top
20 mm Bottom
-Turret
90 mm Front (120 mm Gun Shield) 60? mm
75 mm Side
60 mm Rear
30 mm Top

2.
Name: ISU-122-3/Object 251

Type: Self Propelled Artillery
Origin: Soviet Union
Year: 1944
Produced: ~2000

Length: 6.8 Meters
Width: 3.56 Meters
Height: 2.52 Meters
Weight: 46000
Speed: 37 km/h

Crew: 5

Primary Armament:
-122 mm S-26-1
Secondary Armament:
-12.7 mm DSK

Gun Flexibility:
14° Elevation
1° Depression
3° Left
9° Right

Armor:
-Hull
90 mm Front
90 mm Side
60 mm Rear
30 mm Top
20 mm Bottom
-Turret
90 mm Front (120 mm Gun Shield) 60? mm
75 mm Side
60 mm Rear
30 mm Top

Sources:
http://wikiwikifr.top/index.php?newsid=177590
http://historywarsweapons.com/isu-122/
http://www.pancerium.pl/zsrr-2ws/zsrr-2ws-niszczyciele/isu-122
http://www.aviarmor.net/tww2/tanks/ussr/isu-122.htm