B7 2.0tdi + new engine + belts - buying advice

[munchkincoupe]

Looking at buying a low mileage avant 2.0 tdi (private sale) that has had new engine, head, pumps and belts done by Audi due to oil pump failure. I've asked the seller if Audi checked the turbo but is there anything else specific I need to be aware of or looking for?

Thanks