MSD 5520 any good?

You should be able to drop that and a good coil in and go.
It looks like a "Ready to Run" type, meaning the spark control is inside the chrome cover.
On most of those, red wire goes to ignition 12v+ and to coil+ both, and the black wire to the coil-

Take that with a grain of salt, but that's how the distributors with a box on the side usually are.