I have a 2001 1.4 TDI and unfortunately I had both timing belt tensioners fail recently, with subsequent results. It seemed the camshaft was at least 140 degrees out of sync with the crankshaft so I feared the worse, although it happened at very low speed. The camshaft was also seized. I removed the engine and pulled off the head to reveal a bent exhaust valve in number 2 cylinder, probably seized in its guide. I have found a complete car with a fairly light frontal impact and it has a seemingly very good engine and gearbox with 60'000 km less than mine. There are also some other parts I can use on this car including a good set of wheels and tyres. The interior is very clean and perhaps I can re sell this and other parts. If I choose to go this route rather than rebuilding my original head ( I see there is some camshaft wear) or sourcing a replacement head, and fit the complete engine and gearbox from the accident-ed car, will I have to have my ECU reprogrammed my keys re-coded? Both engines are AMF code and I believe from the same year, 2001. Any advice would be very much appreciated.