Re: Ignition system parts life span
That's a difficult question to answer. If you read this forum, you will see numerous ignition component problems and failures---But that's why they are posted. People with no problems generally don't post.
Now, years ago, Chrysler came out with the Magna-Power II ignition system. This ignition was desevedly considered inferior since it regularly failed. However, many did not fail and are still functioning today. They may outlive their owners.
So: Your ignition components may fail in the future, but they may outlive both you and your engine.
As for availability, I believe they will always be found, but you may need to look harder to find them. Early Chrysler ignition components are still available if you look hard enough. I also believe that it may, in the future be possible to retro-fit to a different--read Mercury--ignition system. This was done in the past by Chrysler racers.
So: If you have money to burn and don't mind hanging onto unused parts, and if it makes you feel more secure, by all means, buy some of the most frequently failing components. Otherwise, take a chance. It's your money and your decision.
