Well - everyone has to make trades on the configuration of their motors for various reasons (cost, fitment, etc.)
I am convinced (as is my builder) that Doug is right, and the limiting factor in this build is at the end of those headers.
Does Hall sell Fiat parts?
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.