Good Evening All

I am after suggestions for a good workshop in Brisbane to have a look at the Grange.

Before anyone says Powertorque, they normally look after the Grange and I tried but they are booked out.

I would like to drive the Grange to Melbourne in about 3 weeks but I think I have a vacuum leak as I keep getting the below error codes
P0171 - Fuel Trim System too lean bank 1
P2270 - O2 sensor lean/rich switch signal malfunction Bank 1 sensor 2
P2272 - O2 sensor lean/rich switch signal malfunction Bank 2 sensor 2

Do any locals have any suggestions?

Thanks in advance