If they aren't too far gone, a hydraulics shop (place that services backhoes and such) can rebuild them. The struts can be disassembled, honed out, the seals and scrapers replaced. That makes them workable, if not good as new. I think they rebuilt the hose as well. I had this done on my old '87 300TDT. The only problem was finding a replacement for the dust boot. If you're interested in doing this, I'll try to dig up a receipt and see what I used.