I'd look for the Hall effect one, not one needing points and condensator off course.
Re break down, having the old points parts as spares for road side fixes if needed.
Thanks, the contact point surfaces look light grey/white, so that would indicate the condensor is good. I'll have to double check my coil wiring etc and test drive without the hood to see if it is engine bay temepratures that's having her to act up. I'm planning to do an air inlet prototype if there's a big difference.