So The coil fires when you jump the violet & green wire. That proves your wiring & box are good. Next step is to verify the distributor will trigger the box.
Set-up the same test but leave the distributor violet & green wires connected. Pull the dist cap & rotor. Loosen the distributor hold-down so that you can turn the housing. Then rotate the housing so that the pick-up coil moves across one of the teeth on the trigger wheel. The MSD should fire the coil every time the pick-up moves across the trigger wheel.
If you position the dis pick-up & trigger wheel properly, you might be able to use the distributor advance to move the trigger back & forth across the pick-up. Coil should fire every time you do this.