Fixing a 64 c10 stepside

[64stepside831]

Hello everyone I just registered on here because I am starting to fix my dads 64 chevy and I don't have any background with fixing trucks or cars. I would like to turn it into a rally type truck that will be able to handle fast corners on the dirt. Or is that not possible for the truck? If not then I would lower it and use it for the street. I would like to know what parts I need to redo the suspension and tires so it can handle a rally course.