No return line for me. Number 10 from my BG400 pump to the regulator up front. And two number 8 feed the carb. But then again I’m on alcohol. I guess I shouldn’t say no return line as mine has a return on the pump in back
I’d post a pic but you can’t see any of it under the hatch. It’s all hardlined in 1/2” nicop (coast guard rules) and all aeromotive stuff. It works well.