Here is my engine bay is setup from a year ago. Its the same now minus the wiper motor.
My first EFI system as well and has worked flawlessly on several track days, thousands of miles, and even in crawling traffic on hot days. I run Aeromotive but do not recommend their stuff since finding out a bunch of current products are Made in China.
I studied their diagrams and built my full return system off that. A benefit is that it keeps the fuel system cooler when road racing.
https://www.aeromotiveinc.com/fuel-cell-diagrams/I run an ATL fuel cell with an internal 255 Walbro pump to a 10 micron then 100 micron filters. I use XRP stainless braid underneath the car along the factory fuel line path to a one way valve to my Y block. From there it splits to the two fuel rails. There is a bracket that supports the regulator. I run XRP Race Crimp stuff as its easy to measure and install, PTFE lined to use with all fuels.
