W/r/t weight saving per dollar spent:
Remember to add in the extra 3 days of prep your body guy needs to make the fenders fit, some I've seen look like they were wrung out like a washcloth.
I spoke to a body guy about how to make them straight permanently. I said if you can clamp them into good position, you can glass a strut inside from wood or conduit. He said ".......... what?".

Remember the shipping/insurance rule:
If the box is good and the contents are bad: it's the shipper's fault.
If the box is bad: it's the carrier's fault.