..this thread is a little old, but I just joined this forum so excuse my lateness.. lol
I had a bore fitted to my Caldina at the muffler shop, they installed it quickly and it sounds ammmazing. Their after service support is questionable though..
Yeah they're quick and easy to deal with, their work just seems a bit dodgey... It's like they use off cuts.
End of my RX7 exhaust before the muffler has what looks like a bit of what would usually be used for downpipe cause it has the O2 sensor fitting on it, but with some metal plugged into it...