Fuel tank sending unit

[rwhite65]

Ok, I have a feeling Rev will know this, but I need all the help out there in cyber space I can get. I am updating my fuel line this spring with the new pre- bent line I bought 3 years ago...figured it was about time to put on.

Here is the issue. If I put the new 3/8 line in place of the old 5/16, that leaves the sending unit as the weak link. I am not sure on what size the line is coming out of the tank, but what good is it going to do when I put a bigger line on, when I am still sucking from the same smaller tube? All the research I have done shows the same sending unit for the 65-68 cars. I can’t imagine the big block cars used the same line out of the tank.

Anyone dealt with this before? Any Suggestions?
thanks,
Ryan