Boyds tank with areomotive340 no return on my 5.3

[bigmoe]

05 had a return on the fuel rail. Or has your fuel rail been changed to a returnless style?

My 5.3 is 2008 Gen IV so it's a returnless rail. As suggested above I used a Corvette filter regulator #LS9904. You mount it near the tank and it has an in port, an out port and a return port for your return line back to the tank. The Corvette filter regulator is used by many. It was recommended to me to use an oem one as many aftermarket can be unreliable.