Using an incorrect length pushrod is a bad mistake. It causes unnecessary wear on the valve stem / guide as it does not push down directly on the valve tip. I went with Scott Cook heads which are cast with the stock looking outside appearance. No problems with pushrods rubbing on the slots even with a high lift cam. I also used Yella Terra rocker arms which do not use or need pushrod guide plates.
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.