We installed the full skid system on one Revo and the belly skid on the other. I thought there would be differance with the added weight, but there was no noticable differance.
I just installed my spare tranny in my Revo today (I forgot to re-set the Opti-drive) and I was popping wheelies on the pavement and grass,even flipped it over a few times! It even blistered my Savage! Although I've just put 5 tanks thru it, still needs tuning.