We did a 24hr race with a Durango R the only things that were changed was the front hinge pin brace to the alloy one and the side pod was modifyed so it was on like a hinge so the spur gear didn't have to be taken out everytime the battery needed changing (there are pics on oOple somewhere) and possibly the bearings got changed too i think we broke a servo arm in the 24 hrs other than that the car ran spot on
