Center driveshaft questions

[MetalMan]

That purple diff cup was a throw-off! But I know what you mean about the wear on the Savage aluminum diff cup, with the wear that developed.

The center diff on there is essentially a Hyper 7/8 diff. That means that you can use pretty much and 1/8 scale diff outputs, that a dogbone would fit into. Like these:
http://www3.towerhobbies.com/cgi-bin...?&I=LXCVR6&P=7
This will be a much sturdier way to do it than putting output cups on the current output shafts, and should also lessen wear due to a better fit.

As for a center skid plate, just be sure that whatever you make allows the screw heads (of 4mm countersunk screws) to not stick out from the skidplate.

Just curious, does the broken portion of the chassis at the rear of the stock motor mounting area not bother you? It didn't bother me, TBH. But that's one reason why I sent along a brand new 3.3 chassis to Mailman when I traded him the truck.