I may have a cheaper solution for you
Tim,
Judging from your picture, I am correct to think you are NOT based in Australia?
If you are I have the following:
I have a fuel pressure regulator in the garrage that you can have for a lot less than what the dealer wants for it. I was diagnosing a problem that some wise ass thought was down to the fuel regulator - long and short of it was that th regulator is fine!
You can fit the thing yourself, it is a bit of a pig to get to, but you should have it done in 1/2 day to a whole saturday if your havinga few pints whilst doing it.
If you want the regulator, PM me and we'll work something out.
Auke