Clairebear, are the scales down the centre of the back six sided, or hexagonal? The Brown Tree snake has a lovely pattern down the centre made of hexagonal scales, quite unusual.
And yes, they get over 2 metres, I have a large one here. Just don't know how big he really is as he will never stay still long enough to measure him properly, but with wiggles and curves, he reaches 7 1/2 feet, so laying out, I estimate him to be about 8 to 8 1/2 feet.