Beefy!! No qualms about cracking my aluminum housing now! I will say on my WJ the "ear's" for the mounting bolts around the axle would rub the gas tank skid on occasion (2" lift). When I went to a 4" lift, I had to move the axle back further in order to center it and adjust pinion angle, and no way this was going to clear the gas tank! so I cut all of the "ears" off and used U bolt hardware instead to give extra clearance, that worked but hasn't been put to the test yet… wondering (aloud) if MVF could come up with a method similar but more beefy…