Someone is selling a MazdaSpeed catback from a series 1 RX8 in almost new condition still...

Will it fit Series 2 RX8's?

 

Yes with longer exhaust hangers (or adjustable ones ideally) but it will be lower so prone to more damage. But not a big deal.

BUt the Mazdaspeed exhaust is kind o shitty and there were a couple of versions. But I have seen them rust on a couple of local cars and things generally don't rust here in South Texas

 

The do rust, but sounds amazing! Not really loud, but bassy and great