I'm in the market for a Hilux, preferably an LN106 2.8d. I have a couple in mind at the moment and just have some (or lots of

What sort of (costly) problems should I look for in this model?
Any common faults?
One particlar one I'm looking at has around 280,000km on the clock (1997 model), for a 2.8d what should I expect of an engine of this age?
What would I be up for for an engine reco, or to fit a reco engine?
What sort of price would I be looking at for the vehicle?
Thanks in advance!
Michael