Small improvement of the 3d style currently for sale.All guns look like the historic D-25t, turret 1 looks like turret 2.2 versions:
Basic: replace all the IS-3 (not skinned) of the game
Skin: replace only the skin Montu.For the users of UML who want to replace only their own basic IS-3, select the skin version and amend ownModel.xml: 
        <R19_IS-3>
            <enabled> true </enabled>
            <swapNPC> false </swapNPC>
            <useWhitelist> true </useWhitelist>
            <whitelist> R19_IS-3,
                dummyTankName2 </whitelist>
            <parent> R19_IS-3 </parent>
            <styleSet> R19_IS-3_3Dst </styleSet>
            <camouflageID> 0 </camouflageID>
            <alignToTurret> false </alignToTurret>
            <effectsGun/>
            <effectsReload/>
            <soundChassisPC/>
            <soundChassisNPC/>
            <soundTurret/>
            <soundEnginePC/>
            <soundEngineNPC/>
        </R19_IS-3>Mes mods / My mods
Game Version:
1.21.1.1

Credits:
grumpf44