[JL8Jeff]

I'm guessing that your dad won't like the loudmouth because it's too loud and annoying. All the other exhausts mentioned will sound more aggressive than what you have now so any of them will work. My 96 SS had longtube headers, dual 3" cats and the SLP 2OTL which sounded really good. But both pipes on the driver's side looks odd. My 93 Z28 I had the Borla y-pipe, 3" random cat and Flowmaster cat-back. That had a really good sound to it as well. You can go to LS1sounds.com and listen to some samples of different combinations but in the end they are all really similar on a mostly stock car.