Here is a picture of how it can be done. It's the simplest and most effective way todo your fuel system. You will have zero issues if you do it this way.
https://www.tanksinc.com/img/efils9904.jpg
As Jody mentions, the VaporWorx setup is also an option. For your 5.3 it could be used if you wanted to. They have a system for an NA setup like yours.
https://aeromotiveinc.com/pages/vapo...Mj9JW94UMZBMGC
I run that on my supercharged LSA Camaro as I need more fuel pressure than the Corvette Regulator can provide. So easy to install, works amazingly, and the pre- and post-support is top-notch.