Not sure if this is what you had in mind for ideas, but here it is anyways. I have a 2 into 1 exhaust header and single BSA style muffler ordered that should be here any day.
http://www.flickr.com/photos/67696148@N04/6161567912/http://www.flickr.com/photos/67696148@N04/6161567912/ by http://www.flickr.com/people/67696148@N04/, on Flickr
http://www.flickr.com/photos/67696148@N04/6161567912/http://www.flickr.com/photos/67696148@N04/6161567912/ by http://www.flickr.com/people/67696148@N04/, on Flickr