Pessoal, conversando com um niveiro húngaro, este me disse que o carburador do Samara serve no Niva com algumas vantagens em relação ao original... segue o texto a quem interessar...
alternatively you could use also lada samara carburettor. it is notcheaper, but has a few advantages. the fuel jets are in centreposition, that means having a more balanced fuel level while driving on rought roads, uphill, downhill or fast curves. it needs an otherlinkage.also you could try out this special diffusor: http://www.motor-tuning.ru/about.php this costs 25EUR. the carb becomes very effective, mixture quality becomes like by central injection.