The rear shaft are really strong stock,,and with cromo its even better..You run into a ring and pinion problem though..To reliably run larger meats and use the skinny you need a bigger ring and pinion,,4.88/4.11..If you good to it 5.29 will be ok,,just a matter of kinny pedal and vehicle weight..The stock rears and not bullet proof,,but for a stock axle there beef..Put it this way,,the rear is the least of your worries,,you have front end issue 1st..
