I just did mine on a 1993 D250. It should say on the sticker on the door post what axle it has and you are right there is no axle, just the spindle. I got Moug ones from Rock Auto for considerable less than the local NAPA. The top one is threaded, it is a right handed thread, mine was so tight I was wondering if it was left handed. You need a 2 1/8" square socket, I welded one up out of a piece of 2" square tubing, I put 1/8" spacers on two sides of the square and then welded 1/4X1" flat bar to make the square. I was too cheap to buy the Snap-on socket plus where I live there is only a minimart that sells gas so I am not sure when I would have got it. I then used a big cresent wrench to turn it. Make sure when you put it back together you don't cross thread it as the pitch is very low. I turned it back and forth a lot to make sure. The bottom one is pressed in, I replaced all the bushings at the same time so I pressed them out and in off the truck. I get my truck back from the frame shop tomorrow, so I am excited, I saw them straighten it and saw how they line everything up so I am hopeful it is somewhere near what it used to be. Todd