I have read past posts but I woud still like to ask...As my 1999 TD5 Disco,s power steering box needs topping up up a lot lately.. Where is a decent place to buy a new pump ? Plus how much do they cost ? Also How difficult are they to fit ? And will "Dexron 111" ATF be cheaper than L/R PS.Fluid..So this is really an update so to speak.. I REALLY Dont know how L/R have been aloud for over 40 years to fit such a crappy power steering pump.