67 GMC Component Questions

[BGDion]

Nearing completion of complete teardown of my 1967 3/4 ton wideside. Starting search for replacement parts and having difficulty on two items:

1) The truck has rear leaf springs - I want to replace the bushings but only can seem to find parts for '68+ trucks and/or 4-wheel drive. Picture is below showing configuration. Any suggestions on sources?

2) The truck has power steering - before teardown the power steering control valve was leaking PS fluid (needed to add some to pump every month or so). I was looking for a replacement control valve or rebuild kit - can't seem to find one of these either. Advise/comments? (picture is below - I had just removed the engine and the pump is setting on the frame still connected to the control valve.)