Heron #2 at Rotorua Fibreglass Industries. It's still upside down, but the photos below have been rotated to make them a bit easier on the eyes.
Here the engine and gearbox are in place. The fit seems to be better than I'd expected, everything appears to line up very well, even including the diff output shafts. Thanks muchly to Paul for doing all this, he's doing a superb job!