I thought I'd take a moment and share what I did to get the front end look I have on my 335i. First of all, the body modeling is from the BMW Aero Kit, but I only went with the front lip. It's part number is: 511 10414371. The kidney grilles are painted to match my exterior and have a black matte look for the slats. They were ordered from Unique Euro Design. These guys were great and I definitely recommend them. I had one problem with the first set I received but they mailed me a new set quickly and easily. I also bought the black lower mesh below the headlights from them too. To install the lower mesh, I had to remove the entire front bumper. Thanks to E90Post.com I used a DIY post that was great at showing what to do. One note though: Make sure you remove your headlight washer covers before popping off the bumper, not doing that ran me $50 in parts and paint to get new washer covers.
So that is what I did to get the look I have and please feel free to send me any questions or comments.