I have been running a MSD streetfire ignition system with the billet mad streetfire distributor on my 450hp 388 stroker for about 4months now without any problems. but the other day I was warming the truck up for a weekend cruise, and without warning it just died like I cut the key off.. now I'm not getting any fire to the plugs.. I jumped the purple and green wire with a jumper wire and the light was blinking on the ignition box but no fire.. not sure if its the coil or the box ? I rechecked all wires going and coming on the box and distributor, and I have the box grounded straight to the battery, from battery to core support, and motor to frame and back to battery... Anyone know what this could be ??