Kid, the trigger wheel typically gets sandwiched between the damper and crank pulley, so it (the trigger wheel) must have the same bolt pattern as those other two items. My aftermarket 351C damper and crank pulley are both a four bolt pattern and the same as 351W and 302HO.
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.