Cold War APC, and the predecessor to the MT-LBu. Thanks to Walter Hawkwood for showing me how to convert the models, and also to find more suited models for Civ4.
"In the 1950s, the Soviet Central Auto and Tractor Directorate began a development program to replace the AT-P series of artillery tractors (which were based on the ASU-57 airborne self-propelled gun) with a new generation of vehicles. The MT-L was developed to meet this requirement based on the PT-76 amphibious light tank chassis. The MT-LB is the armored variant of the MT-L. Entering production in the early 1970s, it was cheap to build, being based on many existing components, e.g. the engine, which was originally developed for trucks. It is built at the Kharkiv Tractor Plant and under license in Poland by Huta Stalowa Wola and Bulgaria."
Versions included are a plain green, desert camo, Finnish, Swedish, and Iraqi.
Cold War APC, predecessor to the MT-LBu