i cut out the rust with a cut off wheel.
then i used a small break to bend some metal into a z shape as close to that was there as i could. then i welded in as many straight pieces as i could. on the curved sections
i cut a v every 1/2 inch inch or so to be
able to bend and form the curved sections.
weld it in using small spot welds. beat and
pick any high spots. i then used fiberglass
to make it all weather tight and body filler
on top. it actually worked great. philip