I am interested in knowing more about your COP's. What makes them better than the MSD's and the ones from Summit racing? Your website doesn't indicate what the boot material is made of...ie high temp silicone, etc. What country makes your COP's...USA, China, etc? Also, why would it cost $19 to ship them to Missouri from Tennessee for gods sake?! Summit will ship theirs from Ohio to me for $11.75. What kind of guarantee comes with your COP's? As you can see, I am very interested in your COP's but I need more technical answers.

I have a 2002 F150 with the 5.4 engine and like so many others on this and other Ford websites, I have a miss when in O/D driving up a slight incline when the RPM's drop below 1500 and no OBDII faults are ever recorded. I am currently running the stock Motorcraft spark plugs along with the EBAY special Global COP's.

Are your COP's guaranteed to fix this problem? I will look forward to your response.

Thanks,

Focusgm