Looking for 47-53 rear cab panel replacement tips

[jd.marshall]

It looks like I am going to have to replace the whole rear cab panel due to some very poor patch panel installs. The rear panel is bowed and buckled around these patches due to welding distortion.

I am first going to cut them out an inch around the haz to see if the metal relaxes but even the bow tie light patch panel installed is warped due to heat.

Looking for any links or posts that detail this rear cab panel replacement. As it will be one of my first jobs if the metal don't straighten up on removing the old weld and patches.