Just an FYI about my install experience. I've always wanted to work on the cat but haven't done anything major in favor of not taking risks with warranty and stuff like that. (I know it doesn't make a difference now, but it was my mindset at the time.) Nonetheless I received my perrin CB yesterday and installed this morning.
This was my first major project on the car and I can say it was easily manageable. The hardest parts were taking off the hangers and the final adjustments. Aside from that it was easy.
As an overall experience, it was fantastic, I loved being able to do the work on my own as it adds to the overall pleasure of having the part in general for me. My car is at about 90K km and although the hangers were a bit stubborn, I managed to get them off on a day where the air temp was close to -15 C.
I used 4 Jack stands and followed a bunch of DIY procedures on this site and had no issue at all getting it done. So basically to those of you on the fence about doing the install, if you have the right hardware, you can do it.
Also incase you haven't heard this before, the system sounds awesome, should go great with my OFH