They are not always sequential. Build numbers can have been skipped (superstitions i.e. 13, 666) and have gaps.

Hey Shawn, Id love to find more out about your sport wagon, Ive been compiling a list of all of them that i can find (over the last 12years)
I have #12 and some mates have #13/#5 and #36

Shoot me a PM or email jimiemick@gmail.com