Factory senders make all the difference

Even if the tubular sock is on the bottom of the tank, 2 gallons may not cover it when the tank is at an angle. My 67 shut down once years ago, ended up half way around a blind curve with a rear corner stilcking out in the rural 50 mph 2 lane. A panic situation I wouldn't want anyone to experience. 1/8 is low enough. Imagine a "low fuel" warning lamp and go get some. Thats my method. Good luck to all.