If go down the Harrison route, try yer hardest to get one with the 36 speed Norton gearbox and the changewheels to go with it.
If possible + steadies, 4 jaw chuck, headstock spindle reducer bush, needs to have a toolpost, any Morse 3 or smaller Mt you can beg off them chucks, centres--even drills they all come in handy.,
It may well be 3 phase, your going to need to get 240V single up to 220V 3 phase or 415 3 phase, converters, inverters etc, many of the older harrison motors were not Dual voltage 3 phase things.
If you have any doubts ask on here.