Custom dual exhaust on a Twin 16 Briggs & Stratton and some old build pics

I don't recall if I ever posted the build pics of this machine, but it is my 87 Yard Man racer with an 86 B&S Twin 16. Anyway here's a couple links to it, and other old mowers, and my new dual exhaust on the racer that I built today.

Some random pics of a bunch of me and my friend's old tractors. The white Yard Man is my current racer, that was stock with a 10HP B&S back then. A few build pics too.
https://www.facebook.com/media/set/?set=a.15889820330.78698.901025330&type=3&l=5cb9a8473f

My new exhaust, sounds like a mix between a Harley and a V8 !!!
https://www.facebook.com/media/set/?set=a.10151290405655331.814731.901025330&type=1&l=e40dbfa441