Is it necessary to run rubber fuel line from the cab to the frame?

[Jim_PA]

Ok, so now I feel like I'm going in circles... My main goal was to minimize rubber, but it seems like I'll be using a lot more than I wanted to.

Rubber from the bottom of the cab over to the pre-filter, then between both filters, and the pump, that takes up about 18", then I have maybe a foot or so before I'm up to the bottom of the firewall. BUT!!! -- I'll be transisioning away from the frame, and should be using rubber again.

What do I do? Just terminate the steel with another -6AN male fitting where the frame and firewall kind of line up, and run rubber all the way up to the fuel rail?

I thought running some fuel line would be one of the easier things I had to do.

Here are some pictures so you can come up with a good way for me to do this. You can see the rotted-up gromet in the floor where I'll be coming down with steel, making a 90 over towards the pre-filter, and terminating so I can use a piece of rubber there.