It all depends on what part of the part you are going to replace with gluing. For example, a butt joint is not suitable for partial assembly - only welding can be used here. But for a flange joint, this is possible. However, this is not always necessary or rational when repairing rusty areas. What is a partial replacement is shown in the photos. I did it this way. Although I myself think that it is more correct to completely separate the old part from the body, and then weld a new one to the factory welding sites. As for the method, the best is MIG (with gas), TIG is not very convenient in this case. You will need to press and hold it somewhere, and your hand will be busy with the filler rod. Glue. In order for the glue seam to be strong enough, you need to achieve perfectly smooth flanges. Will it work? If the metal is primed, the strength of the joint will be equal to the strength of the primer on the metal. If the metal is glued unpainted, the result will be different. This is just my opinion, I have never glued, only welded, so I can not give practical advice.
I removed such places and welded them onto new metal end-to-end
something like this
or like this
it turned out something like this as a result
then like this
That's it. That's how I prepared the base.
Here is an example of partial replacement. But I had no other choice. I doubt I'll find the same parts as yours anywhere at a reasonable price.
To make the profile I used a local factory and bending machine, as well as 2mm thick metal.
I hope my post was relevant, if not, let me know.
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