Im curious if anyone has done a comprehensive weight reduction and kept track of the results. Primary interest is mopar big block but smallblock numbers are welcome too. By this i mean, heavy stuff replaced with light stuff. I dont include intakes, cause almost everybody with a hiperf car has an aluminum intake. And i think the weight difference of an aluminum carb compared to a zinc holley, probably amounts to a pound or two, at most. What im curious about is how much can be saved with headers over iron exhaust, small mufflers from a full system, aluminum radiator compared to brass, aluminum water pump and housing compared to iron, aluminum heads compared to iron, and mini starter compared to the big old mopar one. I can do some of those comparisons on my mopar, but most have been done already. Im going to do them on my other car, and keep good records, but big block chevy info isnt particularly valuable here. I think i can save over a hundred pounds on the front. Anybody done this, and kept records?