valvetrain noise 5.9 magnum

Ya, i seen some iron rams on hughes for 795.00 for a pair and they are direct replacements. It says i would need to put the stock valve train on them, wich is rockers and push rods correct? Would i be better off getting all new rockers and push rods if i went that route? And if so what brand of rockers? mopar or crane or comp cams?