What about items 6 and 7 as per this link?
http://www.realoem.com/bmw/showparts...74&hg=18&fg=20
No. 06, Tailpipe tip, chrome, Qty 1, Part No. 18307610637
No. 07, Tailpipe tip, chrome, Qty 1, Part No. 18307610637
They seems to quote the same part number for both but in the illustration they look different lengths
