Wouldnt know if this is a bargain , but I know the Vauxhall lump has a bit of a following.

http://cgi.ebay.co.uk/Vauxhall-C20XE-Dry-sump-system_W0QQitemZ220533319534QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item3358cf676e