Thanks for the clarification on the "deTomaso years" (1973- 1996). The origins of the SpineFrame, and the Dr. John Wittner connection, are anchored there.
As for Ford small blocks, the "Cleveland", as opposed to the "Windsor" had unique heads with the valves aimed toward one another in a "pent roof" combustion chamber allowing for some high compression and "heavy breathing" ports and cam. The Pantera all sported this motor in the mid-engine configuration. The Cleveland makes a unique, and sonorous, exhaust note while producing admirable torque.
My first car was a 1970 Cougar Eliminator whose 351C made ("reported") 300 horsepower and 380 ft-pds of torque. A formula for short tire life. And frequent court dates.