This probably applies to the dragonfly 2023 (now 2 Pro Carbon) only.
For those looking at the specs to decide between the 2023 version and the new 2 Pro carbon release:
I have the 6.6 / 88L (2023 - and love it). The 2023 spec sheet does not match my board for box length and position.
It never bothered me as the board is fantastic - but looking at the new 2024 specs I realized that now both the foil track length and the track position line up with what I actually have. My track starts 54.5cm from the tail and is 13'' (not 16'') long.
I don't know how this works out for the other sizes - as I have never seen one - but I'd be surprised if the 8.2 actually had the box at the same place as my 6.6.

If you go shopping bring a measuring tape...