A telltale sign of a bad shock is that pull to one side, in your case it was the left wheel. I agree that if you're going to the expense of new pads, rotors and lines that you should replace the calipers, too. They are not expensive at all ($20). You're basically going to end up rebuilding the entire front end and steering system. If these aren't maintained every 20-30K miles, you can get some extreme wear. A Haynes or Chilton repair manual will detail the parts and how to replace them if you can do the work yourself.
One test you can do is raise the front axle halves using a jack and check for any movement in each wheel, up & down then side-to-side. You should have no slack or play. You can also check the wheel bearings and 4x4 hubs. I suspect you may still have a worn radius arm and/or axle pivot bushing. You certainly want to inspect the motor and tranny mounts and the frame cross members for any cracks.
I did all of this on my 84 Bronco, and replace every bushing with poly urethane ones. After installing the 6" lift, Istill had play in the steering. Turns out the rag joint in the steering shaft was worn. Point being that if any one item is worn out or not functioning properly, you'll pull your hair out trying to figure what it is by process of elimination. Some alignment shops will often advise you to "replace it all" and charge several hundred dollars, so beware.