abbochris

hi all not had a landie since my 2a 18 years ago so please bear with me just to recap i can either buy 300tdi stubs,shaft,hub,disc,calipers and drive member or space 6mm between axel and stub use 200tdi front hub,disc and calipers while still keeping the original rear shaft,stub and drive member if this is all correct sorry for looking abit dim but what what decides which hub bearings are fitted as mine are different front from rear