it seems that the clutch shoes/rebuilds have been getting harder and harder to find, might have to resort to getting a more standard 3 shoe clutch and flywheel, and possibly need to replace the clutchbell. (can't remember diamter)
savage flywheels, and clutchbells work at least for the 4.6 version,
ebay is your best friend, some parts though you can get direct from associated, others can be found on random hobby shop sites.
what specifically are you looking for though?