I just found this link, I'm not sure if anyone has built all of these yet.
There are 7 or 8 kits in 1/12 scale, no pictures of them though.
http://www.redfroghobbies.com/doyusha_car_models.htm
I also got pretty lucky with my request for 1/12 Testors kit of the Countach. I got offers from a few guys on here and I want to thank them. I ended up buying two for much less than $142 eBay price, I just have to wait for their arrival. I'd like to build one to resemble this car:
I just need to find interior and other detailed pictures.