I've been searching for a little while and have some up with some close but not precisely what I'm after matched using Google. Seeing as a few people here are into 3D modeling perhaps someone knows some better places to search.
The most common place is
TurboSquid, but none of the cars you're looking for is there. I think you're looking for stuff that's rare enough that you likely aren't going to find any pre-made models.
I've forwarded this on to a number of film/game folks to see if some of them have better suggestions, or barring that, can give a quote on how much it might cost to have a freelancer build the models from scratch.
When you say quality, what use do you have in mind? Are we talking low-poly game-rez, high-poly for VFX type work? What file format do you need?