I'm putting on Hedman D-ported long tubes on my LT1 equipped 3rd gen. I'm going to run them into 2.5 inch extenders then to a H pipe. Dual cats to keep enviromentally friendly and finally into two dynomax bullets and turn downs before the rear axel. I've got the feeling its going to be awfully loud? Any comments on what is going to happen here? And how do you think it will sound? I was thinkin maybe putting glass packs on instead, Dumb Idea?

 

I ran straight pipes (no cat) off my LT1, with a bullet. It was pretty damn loud. My friends could hear me two or three miles away.