Thanks for the reply - I had also assumed that and it does run but we do have a few other issues to be resolved yet.
The temp gauge is not reading and also the engine management light starts flashing on restarting after a short test run. The engine smells hot.
i'm told, but not confirmed, that there is different ecu's and they need to match the injection pumps. how true that is or how critical it is i don't know.
easy way is to check model number of the injection pump, if both vehicles are the same then it should be fine.