What car is the hardest to find in unmolested stock form?

It's a general rule as desirable cars get older it becomes harder and harder to find an original car that has remained in factory form. With many cars it's difficult, but with some it's basically impossible. This weekend we want to know what vehicle you think is the most difficult to locate in as it left the factory condition. What car is the hardest to find in unmolested stock form?

My answer to this question is the 1985-1990 IROC-Z Camaro. Trying to find one in stock form without at least a few dumb modifications is very, very rare. There are enough that they aren't rare and the type of people who bought these cars as they depreciated were not exactly the most sophisticated bunch. As a result, aside from the handful of low mileage examples that have always been preserved, finding one in showroom stock form is next to impossible.

What car is the hardest to find in unmolested stock form?

Photo Credit: MSVG