There is a screw behind the 'Porsche' logo. Carefully peel it off to access the screw. There are also 4 tabs on the grill - one each - top/bottom/front/rear. It may be necessary to replace the double-sided tape on the logo before re-installing.
If you PM me with an email, I can send you the TSB (9144) which covers retro-fitting the M490 option (High Performance Audio System). It has some pics which show things clearly.
Also, it's a good idea to disconnect the battery (radio code in hand if applicable) and waiting 5 min. before proceeding to avoid accidental side airbag deployment - you should do this whenever working on the door in any way.
Last edited by Lil bastard; 10-15-2008 at 09:32 PM.
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