The only thing I might add, Jon, is, don't waste your time with tearing down 351-M or 400-M engines. In these crossbred truck motors, the bypass is cast iron, part of the block. M-series engines are 1" taller than the 351-C and theres a sort of rib above the thermostat area that doesn't exist in the Clevelands. Good luck-
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.