i know a guy with the cherokee running 6cyl, 35's, D35, and he runs a lockright.. i seen him in some crazy places off-road and in town when he leaves a set of lights he gives it what ever she got, i know this for a fact because i been in with him.. we tried everything to break this D35 but did not succeed. even tried rock climbing and still no break, even when popping the clutch. we even tried spinning on ice and catching the tires on rocks but nothing. he been running it now for at least 5 years.