I need to replace my front axle ball joints on my 1987 Blazer to pass the safety inspection. I NEED to replace the right lower ball joint, but do you think I should replace all of them in the process? What kind of tools are needed for a job like this? Im sorta new to working on cars and want to improve my skills which is why I bought the Blazer since its easy to wrench on. Anyway, should I replace all of them and what kind of tools are needed? I will probably replace all of them, but want some more info before I do. Thanks.