[HO455]

I highly recommend getting an early cast iron distributor. The early units have larger and better quality bushings giving you accurate spark distribution equal to the best units on the market today. Plus you can keep your small cap!
After cleaning and verifying the bushings are good install the basic Pertronix point replacement module. Solid units that I have run in various vehicles over the years with no failures.
For best performance (both HP and mileage) have the distributor curved by someone who is experienced with a distributor machine.
And just in case I carry a set of points and the screws to get me home if any thing did go wrong. This is the one for my Burban in the photos.