4.3 to 4.8 swap fuel system

[bdogdafrog]

Hello, I am currently almost finished the swap to a 4.8l from a 4.3 in my 06 2wd sierra. I am stuck on the fuel system and need some help. 

 

My 4.3 had no fuel return system, and the 4.8 has a return system. 

 

Can I just block off the return right at the fuel rail? or do I need to run a return line? and if I do where do I need to run it to? 

 

Thanks in advance for any help!! 

[CamGTP]

Get a returnless fuel rail for the 4.8 engine.

 

Your engine must be a 1999-2002 engine if it still has a return style fuel rail. 2003-2007's were returnless.