What mufflers should I get?

I would ditch the 2" as I don't know much that would make 400hp on 2" exhaust. 2.25 at a minimum and 2.5 would be fine as well.
The dynomax super turbo sound healthy but not obnoxious.Anything straight through will be louder.I ran the Borla pro xs on my supercharger mustang and they were sweet at idle and cruising but opened up alot at WOT.
Consider buying a mandrel bent kit and include an H or X(my preference) pipe in the kit.