I was wondering how much difference there are in the two, I've currently got 40 series on my car and think I want something a little quieter and with a little less drone in the interior. I have 2.5in exhaust with long tube headers and was wondering if the thrush welded mufflers might be a better choice for my car. The 40's I like, they just get a little too much attention at times, and a little noisy inside of the car. So basically I am wanting to find something that is quieter with less drone, if Thrush isn't it tell me what is. Thanks. 
Also I don't know if it helps but I have a comp cams xe274h, I don't want to hide the sound of the cam, just quiet things down. I would also like the mufflers to be decent performance mufflers, not that I'll ever tell a difference.
Also I don't know if it helps but I have a comp cams xe274h, I don't want to hide the sound of the cam, just quiet things down. I would also like the mufflers to be decent performance mufflers, not that I'll ever tell a difference.