I had earlier postings (last year) concerning the failure rate of the MSD 8224 ignition coils. In the course of a year all three had been replaced, failing one at a time, meaning three returns to Autotronics in ElPaso Tx.
Well the car started running like crap, AGAIN, and guess what a fourth coil gone bad! good thing that I started keeping the OEM coils and a 5.5mm wrench in a box in the trunk.
Finally while talking to the rep at Autotronics, he suggested that there "may have been " a production run problem a while back when Jegs & Summitt and everyone else had these things on B/O! With that said he gave me a RMA number and said to include a short note with that number on it and send all three back and they will replace all three, even though when the coil windings were megged, one one coil proved bad.
Just in case anyone else got any coils out of that run, and is having problems with replacement, ie Jegs told me that I would have to pay for a new coil, time to start dealing with Summitt anyway!