Jeep 4.0 in 69 Barracuda

Please elaborate. The person who is helping me is not against the Flowmaster brand. He believes I have made some good choices as to the exhaust parts.

Flowmaster Sucks??? This sounds like a opening of Flames. Almost as bad as opinions of pizza toppings.
I cannot stand the Flowmaster sound. They're just way too loud and obnoxious. There are a LOT better flowing and sounding mufflers on the market nowadays. But it's yours man. Fix it like you want to.