Thanks John, unfortunately there is nothing for a 261 on that list.

The more I read into it, the more I realize the whole PCV valve thing is a mess. "Get one for your application" yeah right - if you have a 261 pretty much all of them are obsolete by now.

Just learned from DavesTech (he actually measured a bunch of them) that a Standard Motor Products V-237 would be right, and I could get it at Rock Auto, but since I live in Germany - shipping that $2.50 valve is $25 .
So I would like a cross reference, maybe I can find something similar over here, but no dice.

Ahhhhrgh!