I have an aluminum oil pan for a BBC that came off of a marine engine. I'd like to use it but I don't know what part number pickup I need. It's like this one.

454 496 502 BBC 9 QT Aluminum Oil Pan BBC Mercruiser - eBay (item 220800569192 end time Jun-23-11 20:41:32 PDT)

Any help is appreciated.

Rocky