I just went and checked mine and it's a 24, which is what the book at the store told me. It's ~10.25" long.
If that chart is right and a 27 is over 12" long, I can't see how a 12" battery could possibly fit in my VX. Is anybody using a 12" long battery?
Be careful choosing a size.
I checked that Odyssey batt finder and it says the 27 is 10.85" long, so one or the other is wrong.
I just checked for a Diehard 27 and it says it's 12.5" long. So again, be careful here.
Mark