You are going to install a diff block into the front diff of your Niva?
This diff body/housing is designed to use a rear diff as a front one. Why? Because a diff block will break the stock front diff body. So you need to buy this all-metal diff body and rear diff to use a limited-slip differential in the front safely.
 
Benefits:
-no noise from front axle as it mounts independently from the engine;
-would not burst because of it is all-metal.

Grind the rocks under your Niva!
 
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