Welcome Brendan. Looks like you found a good old Willys to use for your base! Willys went through a lot of problems in the 20's, and it gets kind of confusing but I think the '30 Sedan was still a Willys-Overland Company vehicle, and it looks like it may have gone by the name Willys Six? Here's an old brochure that pops up -

1930 Willys Six Flyer-01.jpg

and here's the link - 1930 Willys-Overland