Like you can use 800 WHP on the street anyway. You won't miss 50 HP. I am unsure who you are arguing with because I agree with you. Put this on, you'll be down 20-40 HP depending on your setup and have a car that is more livable and more pleasant to be in.
These are not performance mufflers for the level of power most V8 cars make. These are performance mufflers for a car made 20 years ago making 250HP. There is a difference. A stock 5.3 truck LS makes 300 HP, and a single 3 inch is considered "adequate" for performance in that application.
OMG 20-40hp.
Ok great are you done?
If anyone else wants any info, please PM largeorangefont directly. He can give you some figures you want to know, and talk you out of anything around 800hp or higher because it is not worth having on the street.
All kidding aside, if you are interested in purchasing the muffler, post here or PM me. Otherwise PM each other.