I have never seen the factory pinstripe either and have always been curious as well. I suspect it would run along the top of the flat side panels; the sales brochure refers to it as being on the "beltline."
Pictures of my 98:
There are some more pictures here:
http://www.motortopia.com/vehicles/v.../53/i/das_boot
The car is equipped with the standard power windows and 4 way seat, trunk popper, tilt, AC, power antenna and wonderbar AM radio. Except for some collision damage on the drivers door which was blended into the adjoining panels, the paint on the car appears to be 100% original, but it's shot. I won an auction on eBay for the factory cruise setup, which I am going to add. I also would like to get a power vent window setup and the factory six-way seat. I bought the car in 1992. It originally came from Carlsbad, NM. Anything from around here would be far more rusty.
The images in this post will eventually disappear when I start doing the story of the restoration of the car on my website.