by droopsnoot » Wed Aug 29, 2012 10:17 am
It's a bit hard to tell from that photograph of the wing just how bad it is, but if the other side is OK you (or someone, if you're not practised in the dark arts) could probably copy it and have a light skim of filler to make the wing profile more pretty. The back of a sill won't be any use there, have a look at the front of the rear arch as opposed to the rear of the front arch, and the profile is completely different.
Be prepared that when you cut off the bottom of that wing, you'll also have the bottom of the A-pillar to repair and - depending on how far up it has rusted - some of that is a double-skinned section.
Trouble with wings is that is the place where they generally go because all the c**p gets thrown up from the wheels into that area, and if you have the splash guards fitted they had a habit of rotting away and then hiding the stuff that's doing the damage. I have no guards on mine, just so I can keep an eye on it.
Some front floor sections are available in Australia as Holden Torana remanufactured parts, or I've got an email address for someone with a complete HC floor panel, but it's not worth it for the section you've shown there, it's relatively easy to make. Also the rear inner arch sections are not too bad, depending on how far the edge of the floor is affected as well as the arch, the only trouble is the missing section is where the lower mounts for the rear seat belts used to be, so if you want rear seat belts you'll have to make doubly sure the work is good around there.