I am looking at getting a muffler and all I know so far is that I want Magnaflow. I don't know the difference in round and oval or offset and centered. I want something that has a nice rumble and will get people's attention but nothing stupid loud. It's just gonna be the muffler. I have searched the forums with no luck on this topic. Any help would be appreciated. Thanks.

 

Also, it's for an 05 F150 4.6L V8

 

I might be doing the same thing. I have to go to the shop in green bay, Exhaust-pros. I know the shorter the muffler = more sound. The lomger it is = more quiet. I don't want that loud drone noise inside.