i bought a second hand one off mandyslover had to buy an angle grinder, cutting disc, goggles, LM grease and a hub puller (cost less for me to buy all these bits than it was going to cost to get it done at a garage plus i got to keep all my new tools/materials that i just bought), when the hub is pulled off it usually leaves the inner race of the bearing on the stub pin which needs to be angle grinded off but have to be very careful not to damage the stub pin, then the pin was greased up and then the new/second hand hub was put on i managed to strip 3 out of 4 threads on my hub lol