I guess the key thing to look for are "ands"....it saves weight AND enhances dynamic weight transfer. And all weight is logically not equal. Weight in front of the front axle centerline is worth more than weight behind the rear cl.
Also remember the physics of it because it's not only losing weight but also relocating weight that can be helpful. Ex: on an A body if you remove the fuel tank directly behind the axle and replace it with a 12 gal fuel cell that fits perfectly inside the trunk spare tire well, on paper you're not saving much weight but you are moving that (necessary) fuel weight about a foot Lower and 2+ feet further back behind the rear axle Cl in the chassis which effects the cg and your dynamic weight transfer.
Not all weight you remove is always beneficial, on my 73 duster removing the Rear bumper reinforcement (about 13 pounds 4 feet back from The axle cl) actually hurt my 60 foot times. 13 pounds 4 feet back has the dynamic leverage of 52 pounds only 1' back.....so dynamically that 13 pounds did an extra 39 pounds of 'good' planting the tires on the launch. Every .01 you can drop on your 60 is usually worth several .01 in the 1/4, depending on your weight.
