A friend of mine had one in a Caprice. He said it ran well and got ~28 MPG until the bottom end of the engine destroyed itself and sent bits flying out the back of the car at 60 MPH on the highway. I think that happened at around 80,000 miles.

I think the 4 cylinder engines were built by Isuzu back then, but I don't know for sure.

If you go to look at it, post a full report with pictures. Those things are rare!

It seems like "350" and "Diesel" just don't go well together. Mercedes and GM both have bloopers on their records.