I haven't had the chance to fix my ERBE since I hit a rock at full speed on 6S three weeks ago
We moved to a bigger house on March 16th and I have been too busy with unpacking. I also have been shopping for stuff to finish the garage the way I want. I just started working on the ERBE yesterday and I am rebuilding it with the stock diffs. My son's GERBE is still running strong with the stock diffs but he only runs on 4S lifepo4.
I seriously think that whatever diffs or gears or shafts are used, everything will perform great with a good slipper that is adjusted the right way. It has to slip quite a bit to protect that drive train if someone wants to abuse their ERBE and have some real fun. If you're doing standing back flips, that slipper is too tight. In order for the ERBE slipper to slip enough, it needs those aluminum pads, the stock ones are not up to snuff to enough slipping action that will protect the drive train. I'm just saying all this from my own experience from my style of driving which is hard. Not crazy hard with the intent to break the truck, just hard bashing (no more racing) with repeated high jumps, fast speeds in grass, asphalt, gravel, dirt...
It's all in the slipper, with a good slipper adjusted right, even Integy parts could be used in the drive train