where to find a manual steer gear and column

Im wanting to switch to manual steering and brakes on my 70 duster. What vehicles could i look in to tey and find a cheap setup. Or were there any vehicles that possibly came with a smaller power steer gear? Also what do i need to do for the brakes. I currently run disc front and drum rear. Do i just buy a manual master and modify my rod or is there more to it?