Review on Upgraded High Performance Ignition Coil 8 Pack - 15% More Energy - Ford F-150 F-250 F-350 4.6L 5.4L V8 CROWN VICTORIA EXPEDITION MUSTANG LINCOLN MERCURY Compatible - DG508 DG457 DG472 DG491 (YELLOW) by Joshua Vogel

I bought these to replace a set of MSD coils that came on my 2000 Mustang GT. I had an issue with them as MSD coils are known to produce an annoying squeak that can be heard through the car's audio system. After replacing them with this kit the hum is gone and the car is much more responsive. It's too early to tell now as the coils have only been in the car for two days at the time of writing this, but I'm happy with the performance. beautiful. I will update my review later if anything changes.