The Losi is pretty much stock. I have a Novak XBR Sport 8.5 Motor and ESC in it. Using a jr racing xr2 transmitter.
My Rustler though, is no where near stock. It started out as a regular XL5 but now runs a velineon ESC, Trinity duo 5.5 turn motor. Upgraded metal gear trans, graphite front shock tower, RCM carbon fiber/graphite chassis. Proline wheels and tires. Integy 30 deg caster bars, VXL upgraded tie rods, RPM front steering carriers, and a list of other upgrades, including a desert rat body that I spray canned down here.
here are a couple pics of the Rusty:



and here are some of the Losi XXX-4 G+






