The biggest hurdle is the flywheel ID and how that impacts the coil armatures, including positioning, relative the stator plats, to fit the flywheel.
There are a few interesting tradeoffs. The Mitsubishi advance assembly is better built and easier to clean/restore. One saving grace is the fact that the coils can be rewound, if the windings are seriously damaged. The lighting coil is relatively easy, once you have the proper gauge of wire; there's some latitude, so you only need to get fairly close with the total amount of wire. Breaks requiring removal of only a short length of wire, near the end of a pigtail can simply be clipped, back to reach unbroken wire. Rewinding a primary ignition coil could be trickier; thus far, I know of no one who's attempted this. These alternators are pretty simple, about as basic as it gets...so there's a very good chance that it would be sufficiently DIY-friendly to be possible. And, there's always Ricky Stator; they may be able to take care of the rewinding chores for you. There's also converting to CDI...