The rear casting broke when he drove off that 5-6' diameter culvert and the hitch took a direct hit after dropping that distance. It was already broken at that point and only fell off when he tried to snatch the ford off the same obstacle.
Keep in mind that they have done truck sled pulls...
Yes, drivers door only. Passenger door does not vibrate at all at any speed. I thought it good be the air being disrupted by the wiper, but does not change if you operate the wiper. Mirror shakes quite a bit.