[Shark413]

One more thing regarding the Smart diff, the diff case is different from the standard Losi diff case, so the Smart diff internals won't fit. But the optional Losi HD diff case looks like a match. I ordered a HD diff case and should have it soon, I will try and fit the Smart diff internals in the HD case and confirm if it fits or not. If so you can save about half on the smart diff by just ordering the internal Smart diff parts and the HD diff case.