Hi Dan,
Another source for parts is 4 Wheel Auto out of Edmonton. They have a good rep internationally. There are links to a Utorrent fie with a parts catalogue for almost every Toyota made anywhere anytime on another forum. Here's the thread.
http://hiace-super-custom.free-boards.net/...ALOGUE-t123.htmBTW, the company I got my van from is paying for a new exhaust entirely - was leaking from purchase time, it turns out. So I'll see if my bus finally gets up to scratch without a plugged cat !
Cheers,
-Mark
Dan,
I forgot to add that some some people find that if they have the part number they can get what they need from a Toyota dealership. I don't know if that's true in Canada, but it seems to work in the UK and Australia. So it may be worth a try.
-Mark