It can be found in the Industrial District of Anywhere City. Just like the rest of the gang cars, the Bulwark only comes in one color. It gives a shotgun when crushed. (also sporting the Russian Red Star of the roof). It can be destroyed with two rocket launcher shots, two Molotov Cocktails, or two Grenades.
Given its association with the Russians, the car is presumably based on the Soviet GAZ M22 Volga. However, the internal name of the car, ironically, is
BUICK, a reference to the American-based Buick motor company, the current name also seems to imply a Buick Skylark.