- A belated welcome to the forum.
If you can weld, then there is a lot to be said for building your own frame work.
There are a few examples of people using round tubes in their build.
If your donor car's body shell is in decent condition, then Micky1Mo
's approach might save some time.
Although I'd actually be tempted to keep a section of the body shell intact over the rear wheel arches too.
My own Frankenstein
creation of various Triumph Spitfire, Sammio Cordite & home made parts looked like this.
Either way, I look forward to seeing your build progress.
Good luck, Paul.
Even if you only have a body shell to play with, that is still a good enough excuse for a photo.