Iosif Stalin IS-4M dff only mod. Original author is Piciu713. Ported to Android by Los Santos guy.
I've included two methods for installing this mod:

The simple method. (dff only) The only thing you have to do is replace rhino.dff with Img Tool Android
and move the folder called 'txd' to Android/data/com.rockstargames.gtasa/files/texdb. This is a primitive
method. Because it's possible that you already have a file called 'txd' installed for another mod.

The Txd Tool (Android) method. (This method is the best) You have to import 'rhino.txd' to 'txd.txt' with Txd Tool.
(And of course replace rhino.dff with Img Tool Android)
Good luck and enjoy