A little background, I own a 1981 Chevy 2wd 1500. The sterring is really loose feeling, my dad says its because it has a negative steering box as opposed to a positive box which they started using in '88. Can anyone give me some insight on that one?

And the truck has a nasty pull to the right when you let go of the wheel and the ride is rather rough, every little bump feels like a crater. My father once again says its because the truck sat for awhile and developed flat spots on the tires. Could it all be caused by just the tires? or am I need for some new leaf springs and shocks?