I got my original side pipes out today and took a couple of photos of the rear hanger design.
If you need measurements or a template, let me know.
I believe any powder coating shop should be able to finish your pipes after they are welded up.
Mine are chrome fro CR. I will put them on just to get the car runnong. But I plan to replace them with new muffles as described above, and have them powder coated like I did my headers.