1966 chevy c-10 (PowerSteering)

I have a 1966 c-10 chevy and i wanna put power steering on it. But im on a budget, plus i like the pick a part. So I was wondering if anybody knew what year chevy trucks i could us to get the power steering parts from. Any help is appreciated. Thanks

 

http://67-72chevytrucks.com/vboard/forumdisplay.php?f=6

 

This is what I've been running on my 66 for almost 20 years now.

http://www.customcl***ictrucks.com/techarticles/60_66_chevy_gmc_power_steering_retrofit/index.html

 

I have one of those trucks for parts that has factory P/S.

Air conditioning too.