ISU-122-2/Object 249 Self Propelled Artillery

The ISU-122-2 was a tank continued from the ISU-122. Two different rates of fire for the gun are reported.
1.
Name: ISU-122-2/Object 249
Type: Self Propelled Artillery
Origin: Soviet Union
Year: 1944
Produced: ???

Length: 6.8 Meters
Width: 3.56 Meters
Height: 2.52 Meters
Weight: 45550 (450 kilograms lighter than ISU-122)
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

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