Steering Box Ratio

How big your arms and do you need to park in tight spaces as lot and how wide your front tires can you get your car alignment to neg caster?
Once done, the car will live in the garage, straight in, straight out. I hate parallel parking but because of that, I don't mind walking a good distance from my car to the store. I don't mind cranking the wheel but I don't think that I'll really have to.