Anyone ever heard of a 8.375 AWS shape with a 31.5" L and 14" wb? I just assumed it was their 8.3x32.25x14.3 Dumb move(especially with a 8.375) I looked it up on one of the big sites after the fact and those are the specs I found.
Is it a current board or an older one, or do you have a pic?
If you already bought it, does it have PS Stix # on top or just the Alien Workshop logo etched, which would be BBS, unless it was one of those from China when things were a bit funny in the woodshop world, or even HLC in EU when they were doing some.
There are a few 8.375 decks on their web site, but all appear to have the standard size and wheelbase, pretty much as you had shown.
https://www.alienworkshop.com/Three different decks of the same width show different wheelbases, so who knows, but as others have said, their board measurements are often out.
8.375 X 32.25 WB 14.25
8.375 X 32.25 WB 14.375 * about the same dimensions as the one I have here (older graphic though)
8.375 X 32.25 WB 14.4
I am curious now to know more.