id this exhaust -350x

[El'Capitan]

Havent been able to find out what this pipe was made for or if it is a custom one? heres the pic, what do you guys think?
http://i6.photobucket.com/albums/y223/rtscaptain/RIDING006.jpg

[johnny's X]

Looks like someone did some custom work to a yoshimura (or how ever its spelled).

[NOS_350X]

Defently not a yoshi.

My gess would be its some small local pipe shop. Its not a bad design but it needs to be about 4 inches shorter for maximum performance.