need some advice, running 3/8" fuel line, how to run, what to use

Ya know, it's right at the frame rail, but not lower.

This is where I'm at right now, coming off the fuel filter going into the dual feed carb line. Is it okay if I come off the back of the feed with a 90deg. fitting then go into the fuel pressure regulator?

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That’s how I plan to plumb the regulator when I rework my fuel system.