Wanted to go to electronic ignition on the 80, but Pertronix said they did not make an ignitor that would fit it. They had parts that would fit a 79, and earlier. Picked up a 79 distributor from the junk yard and ordered the parts. Looking at both distributors, I didn't see much, if any difference. Installed the parts in the 80 and it worked fine. Here's a quick run down of the install.
Remove the points and the little rubber do-hickie .
Bolt in the module assy.
Install the reluctor ring. I put a very little bit of dielectric grease inside the ring to make it easier to install. It has flats that have to line up with the distributor shaft.
Didn't like the way the grommet was allowing the wires to lay there. It did not fit the slot very well. Drilled the original feed through with a 1/4" bit. The grommet fit this quite well.
Black wire on the negative side of the coil and Red on the power feed of the ballast resister.
It fired right up, but timing was advanced a good bit. Adjusted that. Also the dust cover no longer fits.
Here are the part numbers:
18433 Reluctor Ring
16430 Module Kit
Got them from Summit, they had to special order them.