These are the Jabsco Ballast Puppy Pumps I used.
http://www.wakeside.com/product/134255.do?code=GOOGLEBASE&CAWELAID=81135298 I found a kit on Ebay that someone put together with the tubing, splitters, clamps, etc. along with the pumps and I think I paid $185 per side and it included pretty much everything I needed except for the thru hull and ball valves and Sealent.
Search for this part # on google under Jabsco and you can probably find a better deal. Then just take it to West Marine and have them sell you them for the same price due to the price guarantee.
Model Number: 18220-1127
Manufacturer: Jabsco Pumps
These are ignition protected so they can be mounted near your engine without worry of blowing yourself up like the Simer pumps which work just as well but you need to mount them away from an gas fumes.
$209 - simple Google search -
http://www.defender.com/product.jsp?path=-1|51|299222|839848&id=839452\
Good luck and pm me with any questions