How many with steering box leak?

[ChadM89]

I've got a pretty severe leak at the upper end of my steering box. I have to refill the power steering fluid every 3 days or so. The fluid blows all over the place when I'm driving.

By the way, in case you're wondering, my truck is a 1984 K10 Silverado.

I have a couple of questions I was hoping I might get answers to here:

1) Is this a common problem?

2) Is it feasible to rebuild the box or am I better off just getting a new one. If rebuilding is a good option, where would I get a rebuild kit?

3) Are the steering boxes the same regardless of 4WD or 2WD, or are they different parts?

Thanks.