Re: Intro: My saxes are older than I (am)!
My experience is that S80's work fairly well with modern horns - not so much with old (1920's / 1930's) horns. Individual results may vary... You may need to try several different pieces to find a good match. Again, you want a very large chamber and, if possible, concave sidewalls. Email me offline - I may be able to help you out.