Hersh, according the the Audiworld Historical Model Guide, the Audi 4000 was available in the US from 1980 through 1987. Except for a few turbo diesels, it was never available as a turbo car. The Audi 4000 was a US model designation, and I think it corresponded to the Audi 200 in Europe, possibly the Audi 80/90. According to my Audi parts database, which does not cover US models, all Audi 200, 200 Quattro, 80/90 and 80/90 Quattro models used variants of the 016 transmission.