The coil pack from NAPA appears identical to the original right down to the rubber gasket for the ECM connector. I've had great success with NAPA. I got the Oxygen Sensors from them and they are also identical to the originals.
I'll monitor the plugs, but I don't mind replacing them regularly since it only takes me an hour. They are cheap and I didn't even need to adjust the gap.
This begs a question: What plugs are good other than Autolite and Motorcraft? Does Iridium fire well and last a long time?
Experimenting with fancy plugs will get costly. What I need is feedback on plugs with high mileage engines that have had driveability problems.
- Randall
