Hi,
Just wondering if the cylinder heads are specific to every engine or if some of them will interchange?

Basically I have a 2005 A4 Cab 2.5 V6 tdi (not Quattro) The cambelt went on it and suspect that it has took some valves and not sure what else.
The prices I am getting quoted to have the heads serviced are high but more worrying they are all saying it starts at x and could go to what ever depending on the damage.

I'm just looking at the option of replacing the heads and seeing which comes up best so need to know if the heads are specific when I am looking for replacements.#

Thanks