https://www.youtube.com/watch?v=iE1U...youtu.be&t=106
Iraq has combined a T-55 turret with a 57mm S-60 Flak Gun chassis to create a sort of towed mobile turret (at 1:46 in video)
They've also combined a Humvee with the twin 23mm Weapon station from a BTR-94 (at 0:46).