i wouldn't use second hand driveshaft you dont know how worn the c.v joints are so in 12 months time you could be in the same
spot. I changed mine two months ago, not a big job, just allow yourself plenty off time. you'll need plenty of rags, circlip pliers,
spanner and sockets, jemmy bar( bottom ball joint can be a git). Get a haynes and work from that slowly. change your boots while
the jonts are off

oh and break all the wheel nuts and hub nut while the car is on the ground