Originally Posted by darkw1sh
its not very hard there is a DIY, if you have some time and the parts, its pretty easy, I am putting mine on this week.
Do you own a paint shop? Unless you're going for the mad ghetto mtech look, you might need a little help
Originally Posted by scflaw
try Valiant or Detuscheland autoparts. around 13-14k for a set without Paint, also you need to tell them that you want the M tech Rear underbody tray, M tech Wheel Liners and the Air Ducts for Brake, Oil ETc if you have a 335. GL
I've ordered mine for much less from Valiant. They have an in house BMW specialist who will list out all the parts you need if you have a 335i.
Can you read chinese? Go on car8.com and call a few of the body shops listed there. I'm waiting for another forum member to give me some recommendations.