I have a 1965 GMC 1/2 ton. I have manual steering now and I am going to convert to power steering. My dad is getting rid of his 1985 Chevy, it is a gross polluter. So I told him to take off the gearbox and the pump because I can use them. However he needs the truck to be able to drive forward 20ft and backward 10ft to get money for it. So I wanted to replace the power steering on his truck with a manual gearbox. How should I do this and where can I find a gearbox that will fit? I need help please!