If you havn't tried them already, there is a large group of 8/9/2N people over at
<A target="_blank" HREF=http://www.ytmag.com/nboard/wwwboard1.html>8/9/2 N Board</A>
I needed specific info on the N's, after I picked up an 8N a few months ago. Lotsa resources available. Between the antique tractor forum, and new holland forum here, and the guys over there, you should be in good shape.
Soundguy