3931065 Water Pump (L78)

[Seattle Sam]

I'm looking for a 3931065 BBC water pump with a date code appropriate for a Januray 1970 car.
Any leads appreciated! Please PM or email me.
Thanks,
-Sam

[Seattle Sam]

Correction! I need a casting # 3969811 water pump, any November (Kxx9) or early December (L019 to L159?) date to put on my 1219 L78 motor.

Sorry for the mistake, and thanks to Mr70 for setting me straight!
http://www.wainet.ne.jp/~smoky/mr70.jpg
-Sam