??? "STEEL PISTONS" ??? This is some wild stuff!!

Smoky was a fan of steel pistons. I see a lot of advantages if the skirts are long enough to keep the rings stable. Some GMC diesels had a steel cap that bolted through the top of a hollow skirt assembly. I suspect that they were Detroit, but they may have been Toro-flow (Converted GMC V6 Truck engine). Old dealership parts pile I wish I had picked more thoroughly.