New engine for my Land Rover Discovery

Hi! My name is Emin, I’m 22 y.o. and I live in Russia and some time ago I bought perfect car for traveling, I’ve been and Germany and Czech Republic and I want to continue to travel, but my car have an unpleasant feature: crankshaft may break at any time. I'm scared to leave too far from home. New crankshaft costs very much and repair is really expansive because of ruble rates, I don't have that money. The only right decision would be to swap 3.6 TDV8 diesel engine from Range Rover Sport to Discovery 3 because it is reliable. I hope you can help me to raise money for my goal.