My old 40 DCOMs with the manifold plus some extras is up for grabs on ebay. I'm going to megasquirt so don't need them anymore. Feel free to ask any questions:
http://cgi.ebay.com/ebaymotors/_Car-Truck-Parts-Accessories__BMW-2002-DCOE-DCOM-sidedraft-carburetors-with-manifolds_W0QQitemZ200241131227QQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20AccessoriesQQadiZ2865QQcmdZViewItem?hash=item200241131227&_trksid=p3756.m14.l1318