Yea you wont lose weight if if you leave the hinges on
but i dont think it will make much of a difference at all on a corolla and im not really sure how you'd go about it either?
yea i know it stiffens the cars structure i also said that....... i just tried to sum it up quickly theres a lot more work to it than "welding some extra places" i know that well enough, but yea thanks for correcting me about the warpage.
I don't know how to do seam welding anyways i've just seen a few shows on stuff like that.
