Stop in for a cup of coffee

What’s to know? Brace it, cut old out, weld new in, remove braces
Easy for you to say. LOL YOu have a shop, welder and tools. Sounds like the OP didn't have a clue or the tools to make it happen. I later responded to do some homework before just asking how. A lot of newbies do that. Too lazy to look things up themselves. I even suggested a restoration thread here so he could see how it was done and decide whether it's something he could or should do himself.