All fitted! Japspeed was a bit of an arse to get iff. The two bolts at the Y Pipe flange were rounded, and one was a normal thread nut janmed onto the fine thread captive bolt. Ever tried to source two m10 fine thread nuts over a weekend?
So much more quiet than the japspeed! Sound is 10x more refined, more like the type of exhaust you would get oem on a porsche for e.g, louder than oem but not too loud. I do miss the roar of the k1 as you start the car though!