Guys - I've Gotta give this guy a plug for great prices and superfast shipping.
http://www.discountoutboardparts.com
Merc Carb rebuild kits $29/ea
Merc Water pump Kit (w/upper housing, gaskets, HD impeller) $19 (ebay deal)
Both times the parts went from Texas to Cali paid/shipped on thursday and arrived at my door on Sat (USPS).
The local Mercury Express Parts Dealer (Gone Fish'in) is a joke . . . They didn't even have an impeller for my Merc blackmax or Carb rebuild kits. You've gotta order everything from them - which takes weeks.