Where to get pre bent exhaust pipes and any suggestions on how to swage them to fit over mufflers?

Damn that system is so nice and shiny against that back ground…. LOL
I'm treating this car like I would have 50 years ago. In 1975, the goal would be to get it running and driving, then make it somewhat presentable.
I have 2 cars that are in process of full restos, and 2 cars that will be drivers that I won't be nervous to let out of my sight. The Roadrunner falls in the 2nd category.