back box
 

Should be picking up a prodrive nk box was thinking i would chhange my self anything i need other than a socket set or need to watch out for ?

Nothing really, just make sure the car is properly secured with axle stands if you don't have a ramp. Plus a new gasket would be a good idea or clean the old one with a wire brush and use a bit of exhaust paste.

As above, did this myself last year, needed new gasket, ICP have them at a good price and new bolts. I had use of torch too, the old bolts were not shifting at all without a bit of heat!! Also worth checking the rubber hangers. Good luck :)