RE: XB8 pit tip!!
Not advisable, only if you can get yourself a new chassis after every other race. Use the composite brace in the rear, use 4k or 5k diff oil in the rear, use at least 45 wt. shock oil, rear toe-in at 2 degrees and camber at 3 degrees.
That's my rough/bumpy track set-up...which has yet to fail me