Door seal lip

[superstator]

I'm in the homestretch rehabbing my old bulkhead, and trying to decide what to do with the rusted sections of the lip used to hold the door seals. I understand some folks use the Defender seals and trim the lip somehow to fit - does anybody have a good photo illustrating this? Here's what I'm working with:



I'm hoping I can just cut that whole rusted section out and weld in a some sheet metal bent to the rough profile. If I don't need the outer bend on the lips anyway, that simplifies it a lot, and I may as well take them all off before painting.