From their back issue listing I see Collectible Automobile magazine did a story on the 1932-1938 Terraplane in their February 1988 issue. They usually tell you what models (in all scales and materials) were produced of the cars featured in each issue. If you can find a copy at the library, or want to order one, you will find out what models are available. See:
http://auto.consumerguide.com/pss/collectible/index.cfm
By the way, It resembles a Cord to my eye, except for the grille. Hudson may have bought tooling from Hupmobile who bought tooling from Cord, so that a Cord kit might get you started on the basic body shape. Good luck.
Found out it was a fresh design & tooling (sigh...)