I have an original Apexi N1 cat-back exhaust for a first gen AWD DSM. It is in good shape, with no rust. It has 2 glasspacks along with a original apexi muffler.
It sounds rather modest during cruise and idle, but opens up deep and throaty when full throttle. I cruised by troopers with rolled down windows at night and didn't seem to attract any attention. Overall, very nice exhaust. Looks good on the car as well and doesn't drag down low.
$349 + shipping OBO Otherwise it is located in Duluth and you can come pick it up.
Here are a few pictures: (ignore the miscellaneous flanges)