[RedBarchetta]

I experienced the same problem (driving along and the ignition goes dead). Thought it was the coil, so I changed the coil. No fix. Thought it might be the ignition pick-up on the MSD billet distributor. No fix. Sent the MSD box back to the factory for a diagnostic. Nothing wrong with it.

Turned out the ground wire (which was run through the firewall and snugged up to the windshield frame) had backed out of the crimped connector. Re-fastened the ground and she fired right up.

Look for the obvious first. Check the wiring, THEN swap out the coil.

-Dean