Help identifying aftermarket exhaust

[Slipstream]

Hey guys, when I bought my bike the previous owner threw in a Yoshi pipe and headers of unknown brand that he never got put on. I was wondering if anyone would be able to help me ID the model of the Yoshi pipe, and possibly the brand of the headers. All I have to go on is a part number label on the headers and google turned up nothing. The outlet on the headers and inlet of the muffler are 2 inch diameter. Any insight would be appreciated, I would like to figure out if these parts are even usable. The PO told me that the headers don't align 100% perfectly with the exhaust ports on the engine but were very very close, so I'm not even positive they are compatible with the Seca.