Fuel Line Questions

[72 Copper C-10]

Hello everyone,
I have a 72 k10 LWB that I am currently relocating the fuel tank. I have been searching for ways to do my fuel lines and I have come up with a few ideas. One idea that I particularly like is to buy fuel lines from a suburban and modify them to fit. I have looked at inline tube and they do not carry fuel lines for a 67-72 suburban, but they do have them for a 73 and up. I was wondering if the frames are similar between 72 and 73? I was also wondering if this could be an option, or is it a better idea to bend my own? any thoughts or opinions are greatly appreciated!

Thanks, John