I've been thinking about this for a while, but what is the difficulty of switching out two wheel drive drivetrain and installing a 4x4 one all while keeping the same engine. Right now im driving a 2 wheel drive 95 Xj with a 5 speed AX5 transmission and need to know what needs to be done for this to work. Thanks in advance!

 

Basics would be a tranny, transfer case, front axle, drive shaft.