Just ordered rear wheel arch panels for my 74 F250 and would like to try welding these in on my own. Hoping someone could give me a short step by step on what I should do to cut out the rusted wheel arches on the box and weld in new ones.

I have only welded a patch panel once before on this truck with the help of an old friend, so my experience is very limited. Could use a little guidance on the steps I need to take to make sure this turns out ok.

Thanks,
Chris