What you would be best doing is contacting Turbotechnics and seeing if they will send you out at Stage 3 t34, this comes with the .55 exhaust housing and is the same as my turbo..

Hardly any lag at all, specced to be able to run 30 psi all day long.

The bigger exhaust housing will make the engine rev more freely with a good live map, i couldnt believe the difference after fitting the turbo and having a re map!!

My aunties going to live in australia next year and was thinking of going to live there myself, new zealands in the same direction

Whats it like over there for cossy owners do you get much respect from othere people ?? Id love to move over there with my cossy