How can I find this part?

I would like to replace the pillar covers on my 3.0 to the ones from the 4.0 or 4.6 . The part I am talking about are the covers bettween the windows. On the 3.0 they are matte black and on the others they are high gloss black. Any sugestions?

Thanks,

RAB

Try BMW dealership for the stock ones. I also know for sure they have graphite pillars in accessory catalog.