3rd Gen Hemi weight?

Multiple sources list it at 533 lbs."Must" be with accessories ? Seems a lil' heavy, to me but ? You could plop another $4k down, and save approx. 100 lbs with alum. block. I would like to hear what an alum. headed,int.,timing/h2o pump, sbm. weighs. Anybody ? ateam.:read2: