FWIW, I'm still using an ancient Weiand aluminum water pump (half the weight of an iron stocker) that I bought in the early '80s. I cracked and TIG-welded it, modified it with an impeller backplate (made no difference in cooling), and it's still on the 351-C! But I really look it over for leaks before driving any distance. Some speed parts were well made back then.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.