The common complaint is the popcorn machine sound out of the stock pipes. I understand that someone did some dyno tests and with a big block there was a 75 HP difference between the stock and free flowing 3" inside diameter pipes. I had a friend weld in some stainless specialty mufflers in place of the stock mufflers and they sound amazing! Much cheaper, at about $ 119.00 each (
Stainless Steel exhaust components• ) All said and done I think I was less than $500 with fresh ceramic black coating.
Jake