I have some gear left from previous cars that I'm not using: Brand new set of DLS Iridium 6.3i - $400 (these were installed in some custom door panels that took me MONTHS to get back and by then, I sold the car. Took the drivers out and they're perfect). These are three-ways and should be great for the R56+ models Lightly used Rockford Fosgate Power Series T600-4 (125w x 4) $250 This was used in my R53 (mounted under the passenger's seat) which was sold in the fall of 2008. I think I had it installed for about nine months.