I though I would take these pictures today for those interested in the differences between the 98-01 and 02-04 intake plenums on the 3.2/5 engines, I was taking some of the older one and decided to put both side by side for comparison.
Older '98 to '01
Newer '02 to '04
Lower intake manifold, same between all years.
Hope this helps clear some things up.
2011 BMW 335xi (e92) - Black Sapphire Metalic w/ Coral Red Interior