Leave the original tips on!! You are contemplating chopping off the tips that everyone wishes they had on their non 4.6/4.8 X, and you want to replace them with tips that look like they came from autozone? Not to mention they are original to your 4.6 of which only 3,000 were even made. The only excuse for cutting those off in exchange for quad tips is if you're going with Eisenmann or Dinan from the resonator back. Don't mess up a good thing, please.