It’s really not good craft to run a rubber fuel line under any car. It puts flowing fuel in harm’s way in a less than secure envelope. For example, if you run over an alligator, he will have the last laugh as you both go up in flames.
The factory ran a metal line nested in the a metal channel to protect this fire source. In the picture above, this builder ran a rubber length right across his low Sprite-should anything sharp scrape the bottom of the car with this configuration, a 7 gallon fuel leak might result, and a fire too.
It’s probably been this way a good long time, and as long as the car stays on the road, it would probably be fine, but the proper metal line is cheap insurance. The correct way to run the fuel line is down the passenger side flange, all the way to the front cross member behind the bumper, then across the frame cross member to the carburetors.
Whether you have HS1 or HS2 carbs, you can make a line using this coil which comes with the correct fuel tank fitting and is long enough to run the entire length of the car. This is a good thing to do correctly. We run metal lines, and try to keep the unions up out of the gator zone.
These lines will be added to our product catalog in the near future, but if you’d like them sooner you can call us and place an order.