My water pump is leaking on my 2002 7.3. Been looking around for parts and seem can't afford Motorcraft. They seem high. I came up with Gates and Bosch. Gates were $85 and Bosch were $115. That where my budget is. Found them on Rockauto.com. I need opinion. Plan on order either one tonight and have it ship out so I can fix it this weekend. Does water pump usually include gasket? Thanks.