You got 2 seasons out of a used ring and pinion not bad..put a new set in and go..by the way NOTHING is "bulletproof" seen many a dana 60 go "boom" too...
Yeah..... 800hp. Throw a set of gears in it and go.... NOT! Break that rear hard enough and you can break the trans case. That's the next weak link when that super sprag does its job... my cousins high 9 Duster proved that theory. Anything can break.... but for gods sake!! Push the odds in your favor.