hi guys, i need to replace the rotten sills on my 92 disco 1 ive done a search and found plenty of help but nobody says about the braket that go"s to the radius arm thats welded to what would be the outside sill leaving the front 6" of sill hollow, the box section ive got is 100x60x3mm do i just replacate what exits now, all help would be gratefull.