I couldn't find much on this, so I had to fumble my way through it. Thought I'd offer this up for help to some of the other guys. This is a 2004 Ford Crown Victoria rack going on my 56 F100. This is how it started: I narrowed the crossmember 1.5" so in order to keep the geometry correct I need to narrow the rack. First thing I did was disassemble it. Not too hard to do. You need a large set of Snap Ring Pliers, a dental pick, and a seal puller (I made mine). 3/8" rebar with a sharpen piece of 1/8" steel welded to end. I had to sharpen it and quench it several times to get it hard enough. Had to have it to pull this seal. It was about 10" down in that cylinder. After disassembly, I had 1.5" cut out of the center of the shaft. I also had the machinist make a set of V Blocks to weld it back together. I then used masking tape to mark 1.5" on the aluminum housing and cut it with a hacksaw so I had good control of the cut. After cutting I used a LARGE flat file to finish the last bit off to have perfectly square butts. I used a flap disc to bevel back the edges for welding and a diegrinder with a sanding drum to get into the grooves on the housing. It was then bolted to a piece of 1" tubing to hold in place. When welding I slid a piece of pipe inside the housing to help hold it straight also. Then they were tig'd. I had the shaft turned down and polished. I reassembled everything using new seals I got from pskits.com. All of that went back together like it came apart. They provide you with all the soft parts, new dust caps, and nuts to assemble. http://www.pskits.com/catalog/rackk....html?osCsid=c8e50f80548063d11a0cc247c2f64800 I ran into one issue. Getting the teflon SQUARE orings to seat properly. They stretch when you put them on. So they have to be shrunk down. I used a hose clamp, I line the inside with a piece of solid hose clamp and placed them around the seals. Then I tightened TIGHT. Next heat them with a butane torch until they are to warm to touch and cool in water. this stiffens them up. Worked real well. Here is the final product: Lastly I had to shorten the hard lines. I cut 1.5" out of them and then used couplers to put them back together. I wish I had taken more pics, I just get so involved in something I forget to. If you have any questions feel free to ask.