The monstrous appearance of the Duraspark distributor has been bothering me for a long time. I had already thought about converting to a Petronix until I read in various forums a few days ago how some guys swapped the large distributor cap on the Duraspark for a small distributor cap. As this was brillant and worked out very well I like to share this with you:
All you need is a distributor cap from a 1975 International Scout (Part# AL482) and a new distributor finger (Part# FD311). (less than 40 EUR for the parts here in Germany)
Remove the large distributor cap, including the adapter and the old finger. Take the small distributor cap and mill a small notch with a Dremel or a file at the point where it will later rest on the vacuum advance (only 1-2 mm) to ensure proper seating. Then you put the new finger and cap on, plug the old ignition cables back in - done!
Enjoy the vintage look!
Cheers
Sascha