That is a cool find! I am still looking, but as of now I don't know. I was thinking Buick, but I haven't found one like it yet, even though it has some similar lines.
I hope you don't mind, but I posted the pics over at Scale Auto to see if anyone there could ID it. I'd like to know what it is, too. It is just too cool. Lots of potential there for a really sweet custom.
Those 1/32 cars are pretty neat too. I can see them fitting in easily to a 1/35 diorama somewhere...