Mopar/MSD 7al-2 q's

I use one of those boxes. Weak it isn't. I touched the positive side of the coil with an extension once while loosening the distributor hold down while it was running, I'll tell you what, it froze me in my tracks and I fell to the floor like a sack of bricks. Lucky it didn't kill me. That was the worst shock I've ever had and I've been shocked by camera flash capacitors before, that one damn near killed me.

Oh and you can get schematics at MSD's website.