mufflers or no mufflers??

I'm just wondering if anyone ran straight 3" pipe with a X or H pipe installed all the way to the rear of the car with no mufflers would it be to loud? I have heard that going that big of pipe you have to richen the carb however. I know previously it was mentioned about exhaust flow so I was just wondering. In my state there is no inspection of vehicles at all. In my case it would on a 360 bore .030 over. Just curious it anyone has done this. Kind of far fetched but I think it would sound pretty good if it wasn't extremely loud.