This is the pump I have used on a few of my projects.
Nice and quiet and never left me sitting.
Price is right also.
Airtex e8251 It is a Marine pump. 30 GPH which should support around 350HP.
http://www.ebay.com/sch/i.html?_from=R40...51&_sacat=0

http://www.onallcylinders.com/2013/05/16...tions-answered/

Inliner Member 1716
65 Chevelle Wagon and 41 Hudson Pickup
Information and parts www.12bolt.com