James has cracked it.
By process of elimination.
It is indeed an Eagle 150B ZK-XAB c/n 032 of Rodin Trust CHCH..
One of three in country after ZK-EGC c/n 019 which has been for sale at DTI for ever, and ZK-PNM c/n 035 with the Odlum's at Huntly.
The rod is the push/pull rod for the wiggly bits at the back end.
The background prop is SU-29 ZK-SUK.