how do i replace steering box?

[low 84]

okay i wanted to hold off and rebuil the whole frontend this summer but its gotten so bad i can barley keep it on the highway, and the front breaks are shot. so i going to replace, rotors, calipers, pads, wheel bearings, tie rods, and steering box.

so where can i get a GOOD steering box? is there anyone who makes a closer ratio box for our trucks? where is the best place to get one?

and also i have never put a steering box on. is there a tech article somewhere or can someone tell me what all to do. like does it have to be bled to get new fluid in and air out and anything else i need to know?