After putting up with a mildly blowing exhaust for about six weeks, yesterday we finally had the new back box put on.
It'll last for twelve months, it's a Janspeed mild steel one, heh, but it only has to last until we take the Ka to the Arctic Circle.
Has a nicer burble to it under moderate load, not very loud at all which is good news, it's not actually that loud under full power, either, so yeah I'm happy. Mind you, there's a _huge_ increase of power to deal with . . . mwahahahahah! :)