Best coil, box , resister combo ?

Last time I bought an MSD they included a jumper wire in the package to use across the ballast connections. It's no big deal either to make your own. One thing about an MSD though is you must wire it up correctly, particularly with the heavy positive and negative leads that supply the main power to the box. They usually want them going right to the battery. There's about 7 connections total you need to make. Some replace factory wiring, like the + and - to the coil, others splice into the pickup wires in the distributor, two to supply + and - from the battery, and if you have it the output for a tach.