I just had to do this on my VZ SV6. It appears someone has put their foot through the passenger rear speaker grill aswel accidentally. I bought a replacement part from the Holden spare parts center in Freo (Shacks Holden) cost me $40. When taking the old grill off I noticed that when the clips are removed, they tend to bend a fair bit and require a lot of force to remove. I have not as yet replaced the clips, the grill is just slotted in and sitting there, should be doing it today. Pretty bloody silly design flaw if you ask me. They should be a little more accessible like say for instance speaker grills on home theatre systems, with the rubber lugs that hold the grill in place. Ah well.....