Comes from plenty of things, 220 Turbo, 220 Coupe Turbo, 420 turbo, 600 Ti, 800 etc.

Cheap as chips to do now and the conversion shouldn't even take you a day if you have the engine, loom and ECU, sub frame everything just swaps over. I think all you need is a Diesel gear box*mount*but its that long since i helped do one i cant remember all the details.