I'm really sorry to hear about this man.
What I would recommend is that you get a donor car, possbly one that has rolled over the strip the engine form so that you can get all the wiring etc, that has to do with the engine, or try to get the excat same engine that you origanlly had in the car, which I think might be hard to find seeing as there aren't a lot of 325tds around (i think). This is of course just my opinion and I am by no means an expert in these kinds of things.