New tweeters in the door sails (in my opinion only do the rest of the drivers if you think it needs it.) - less than $100. The tweets are the weak link in the sound on the X5.

Rest for a skid plate, detailing job and fogs.

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Cheers!
Chris

03 X5
02 Acura
88 Mustang GT Ragtop
88 Campion Allante 195
99 Itasca 29