Take a look at the Saginaw 4 speed conversion information at Patrick's. It addresses many of your questions.

http://www.patricksantiquecars.com/

http://www.patricksantiquecars.com/chevy-gmc-auto-parts.html#chevy9

Matt

Last edited by Grigg; 12/06/2016 8:10 PM. Reason: add another link