Steve, I hope I can bug you again with a related train of thought.
My car also has the rather infamous silver Permatune ignition box, which has been fine for the short time I've owned the car. However, I have read that its only a matter of time before the P-tune leaves me stranded. I also have lofty dreams about twin-plugging (and even EFI) but that is a ways into the future so I can justify a re-curve for the joy it brings in the meantime, as long as I'm not missing out on a more comprehensive solution or neglecting the weak link in the system.
Knowing this, would you suggest considering some different alternatives to distributor work?