I am using the setup without the fuel gauge and and it works great. Has some flexibility built in which I prefer to the rigid setup.
https://www.scramspeed.com/products/carb-dual-inlet-fuel-feed-line-8-an-holley-4150-with-gauge.html
https://www.scramspeed.com/products/carb-dual-inlet-fuel-feed-line-8-an-holley-4150-with-gauge.html