It's only the RTR versions of the car with the plastic outdrives.
You will need WBD04 and take the time replace the main diff balls with some carbide ones and maybe replace the trust assembly as well (BRG100).
I normally use either AE or Kyosho greases and only just enough to "wet" the balls is all you need. Follow my method for reshiming the diffs on reassembly (a quick search on here for diff and my name will find it) and you will have a great feeling and reliable drive train.
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