Yes the plastic covers and lock blanks are the same for all doors and cars. Personally I think that you should buy the de-lock kit from ebay as they include a third part which is a small disc - I don't know what this disc does but VW don't seem to sell it! Changing just the top plastic cover might not work as the top of the lock will still try to poke through the plastic cover that does not have a hole.
the little round disc clips into the barrel hole which is inside the door. Once in, it'll never come out again without drilling through it! Part number @ VW is METALDISC if i remember correctly, and I picked up quite a few when I delocked my Leon, which I've since sold and thrown away the discs!