Epic thread bump.
I have another one of these cats for sale, out of the 2 I have, 1 was destined for my grey trx but since it is no longer, I have no use for it (I don't need 2 of them on my black car!)
Chasing $130 + postage (or pickup is available if in VIC), once I have cut off the 2" end cap and welded on the 3" end cap, it will be identical to the one pictured and described above.
Cheers.