I've been using these on my Crown Victoria 99 P71 for about a year. Replaced the complete exhaust of the last Kats. This included new piping and an H-pipe. I bought these based on other reviews and have to say I'm really happy with them. They break well. The growl makes my V8 sound like a beast. The roar on the track doesn't bother me at all. A cold start in the morning at a lower temperature will make your neighbors nervous, but I never bothered with them. The price of the mufflers is worth the plan at the cost of a lot of exhaust work to get what you think you want in your head. Don't forget tips.
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