the right choice of rear axles

Hi guys ,
I would like your opinion to find the best compromise for the choice of the rear axle. As I live in Belgium the first idea, it is to buy a rear axle of Jeep "Dana44" and to do all the work of adaptation.
I think buying a bridge from your house in the USA will cost me a lot. I have to do the accounts.
what's your favorite choice for receiving power and torque from the 440 engine in your Dodge?
I would not change the position of the rear suspension springs, and not the fuel tank either.
thank you for your help and excuse me for my english.
Andrea