Youve got to figure out what mods you are looking to see. Most everyones cars on this forum are modded in some way or other. Most arent visual though, i.e. exhaust, pulley, software, diff. Visable changes usually involve tinting or lights or carbon fiber inserts. Just asking for pics of modded M6's is not going to get many helpful responses here.
Don't you just love it when people tell you to search...I hate that as well...but I agree that if your looking for cosmetic mods you can try AC SCHNITZER or hamann...
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2005 Lotus Elise (track rat! - Ohlins coilovers, Larini SE exhaust, CF side scoops)
2005 E46 M3 (Sold!!! but not forgotten)
2004 Range Rover HSE (gf drives it)
2006 E350 MB (got it for my mama)
1989 E30 (R.I.P.)