go talk to Paul at Allstion Collision
http://www.allstoncollisioncenter.com/ tell him Matt Cain sent you, he will tell you everything you need to know, you could even just show up and will tell you what he thinks.
I have had them put my m-tech rear on about a year ago and i dropped my car off there on Monday to get a m3 front put on
. very happy with there service! goodluck
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07 e90 335xi- Sold, 09 X5- Sold, 12 e92 335 xdrive - Sold 11 e92 M3- Sold, 15 M235-Sold,07 e90 335xi (current daily), 10 Atlantis e92 M3 (current) Way to many mods to list