I've got 1 complete SM318 O/D, at my shop. Seems like every other brother's buddy had one of these, until I started looking for one.
I'd love to have a few more. At least one friend of mine wants me to build a conversion for him.
Guess I'm a cheapo, but I can't see giving over $100 for something I'm going to cut up, and throw the big half away.
I passed on one that I should have pounced on. There was a Saginaw 3+O/D, on eBay last week. I think it went for $125.