Thanks, David for your post. In Randall’s excellent book “Chrysler in miniature”, he shows 3 manufacturers who made models of the Valliant. Trax, Jupiter & Milestone Miniatures. My one by Jupiter seems to be the best, so at least I’m off to a good start! The Milestone one appears to be the least accurate.
Anyway, thanks for your interest, I think this may be a long search!