I'm sure other will chime in (looking at you panteradoug) with horror stories about MSD systems. I don't know about any dual point users but there are several who swear by the old DuraSpark system. I switched from an Accel Unilite to a Pertronix distributor. Dpug will tell you to look at the Pantera Electronics ignition control system.
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.