I have had these units in my shed for more than year since I bought them off Jas (ZX2NV who as everyone knows has since disappeared). Here is the thread that describes them: http://www.aus300zx.com/forum/showthread.php?t=266133&highlight=exhaust I am never going to use them so I would like to sell them for $400, which is what I paid for them. I have a Pajero and can deliver anywhere in reasonable distance from the Central Coast if necessary.