I have a 1969 chevelle ss 396/325. The prior owner put a holley carb on it, and disgaurd the smog system. My question is reguarding possible vapor lines that run parellel with the fuel line, from the tank to the area near the fuel pump. I know it is a vapor line because it has vapor stamped on it. At present it is cut and plugged. Is this a vapor line? From what I have read and seen 69 did not have a carcoal filter, but then where would this line run to. Please help, because I have had gas leak out of this hose on a very hot day, just after I filled the tank. I would love to fix this situation, for authenticity and safety. Thank you in advanced.