I just ordered F79Z-4033-AA front Axle Cover And Baffle Kit from TSB 98-23-3. I called my local Ford dealer, and he said there were none in the Ford system, but found one left in "Vintage" -- I'm not sure what he meant. Ordered up, and it's being shipped. I hope that's the fix to my front diff leak. I looked the part up on Ebay, too, and it looks like they're still available.