I have recently converted my si front bumper to m front bumper; however, the engine underbody panel on the si is 3" shorter and does not extend all the way to the m front bumper. For the si, the bottom grill extends to the engine underbody panel to bridge the 3" gap. Can the m coupe/roadster owner post a picture of their car from bottom up? Thanks.

On Bimmerfest Randy Forbes put a Z4M he was test driving on his lift and took several photos of the underside; you might try a search there. in the Z-series forum.