The xud and dw8 were used in a lot of cars, and your right the dw8 also went in the ldv pilot, with a rwd 'box.
If the o/p is using a induction motor as a gen regulating the field coils isnt an option, the field coils would be the rotor, to get the rated voltage you'd need to run the motor a bit faster than rated rpm, about 1560 for a 4 pole motorm which automatically messes up the frequency by a few hz, so its a bit of a juggle between correct freq and voltage.
If the o/p is using a induction motor as a gen regulating the field coils isnt an option, the field coils would be the rotor, to get the rated voltage you'd need to run the motor a bit faster than rated rpm, about 1560 for a 4 pole motorm which automatically messes up the frequency by a few hz, so its a bit of a juggle between correct freq and voltage.