Raw Water Pump on 4.3 Liter V6
 

I have a 99 Volvo/GM 4.3 Liter V6 engine. My raw water pump is
leaking and needs to be replaced. The pictures in my manual (owner's
and repair) show a pulley-driven pump, but on my engine there is one
directly coupled with the crank pulley, with two rubber hoses on the
starboard side, one large, one small.

Can anyone tell me what pump this is likely to be? My parts dept.
goes by the serial no. on the engine when they order parts but this
has already resulted in incorrect parts arriving so I need to be sure
I am getting the right pump.

Any ideas? I have checked all the pumps for sale on ebay and none
look like mine.