Thanks Paul, yeah I already have planned out an area to do it before proper tuning. It will have to wait for the exhaust to be fixed up though.
I also plan to do an oil flush immediately after the tuning and bedding in of the diff as I hear they shed a fair amount of crap from the clutch plates in the run in procedure.
Yeah I did get to drive the gold car at Wakefield Matsuri, that was the point at which I decided I 100% wanted the Type-S suspension. Your car was super predictable and just exuded a feeling of control I am sure the diff played a part in that as well.