The niva_btr.zip file you have requested: Modifications / Single Player / M to N Titles / Vehicle Mod - 3.67mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R. Shadow of Chernobyl and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Stalker, visit Stalker.filefront.com This mod adds in some vehicles to the game.