My sister just purchased a 69 GMC 3/4 ton 2wd, with manual steering. I saw an add selling a power steering set up for a 69 chevy 2wd. I haven't heard back from him yet, but would it matter if the setup came from a 1/2 ton truck? What all would I need to convert this truck to power steering? I am relatively new to chevys, as I like to play with all makes and models of automobiles(except imports).