Help identifying this exhaust system

[Ducatierv]

I've had this ceramic coated system for a number of years, got it with a bunch of 900SS parts so I am assuming its for the same however it doesn't seem to have any markings and looks very large diameter. I need to go measure it but it may be 51mm.
It looks like its never been used and is missing th front header.

Any experts out there that recognize it? trying to decide whether to fit it to my 944 or sell?

[avaipan2]

304 ss

[TAftonomos]

Sell it to me Erv so I don't have to spend the time fabbing one from scratch!