Art, this may not help, but if you want big inches AND reliability, Ford Raceing makes a crate engine of 602 cubic inches and it has a one year warrenty. It is a little bit on the large and heavy side however.
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.