The one with the Yammie bell is on the right. The camera angle makes it look shorter but both horns are the same height. The swap went very well because the Yammie bell throat when the bell is trimmed to the proper length is nearly identical to the Mirafone bell... 'cept the bell diameter is 17 1/4". It plays great! (The chicken had nothing to do with it!)
http://thevillagetinker.com/projects.htm