I am unsure what kit to buy for my cam belt and pully change... every kit says later or early type and as my engine is from a unknown donor im not sure?
If the history of the engine is unknown, you might be better off opening the timing case and having a look at what is fitted - there is a kit to update the old style to the new style so even an older 300tdi might need the new style kit if it has been modified.
The early type has a lip on the tensioner pulley, the newer type does not.
Dealers were instructed to paint a yellow square on the left side of the timing case to indicate that it had been upgraded to the new style but there's guarantee this has been done so I would definitely have a look inside.