Sorry Rick, but I just gotta do this..
"Need more info...." >re-read the question.
"Why the change? Because you were upgrading or trying to fix a problem?" >Irrelevent, He's asking how to adjust the timing on a 9N.
"Front or side mount????" >NO 9N motor was EVER made with a side mount distributor. If it had a side mount it would be an 8N.
"12 or 6 volt?????" >First sentence says it's 12v.
"Lot of questions you did not address." >It's all there IF you actually read the question.