Went to a swap meet an hour away, beautiful day so I drove my '69 Mach 1. On the way back hit a very bumpy road, after a mile or so my car died, just like I shut it off. Figured something came loose, checked every connection under the hood and all looks ok. $215 tow later and I was home, checked and have no spark. 351w, T5, Duraspark. I don't think I can test the ignition module myself. What would be my first step, 12v at coil in run position? Does this still apply with the Duraspark? If anyone has a step by step that would be great.