Help Identify this.

I know this is going to sound silly but I gotta ask. 71 Scamp, factory 318, on the passenger side fenderwell coming up from same spot as the fuel line, it looks like steel fuel line, it goes up to the top and maybe 10 inches forward. is this the fuel return line? It wasn't hooked up when I got it. If so where does it hook to on an Edelbrock 1406? Thanks.