Great vapor lock prevention! Anyone who has driven the high plains of Utah, will probably know about vapor lock. Spent three years doing summer programs throughout the western U.S. Spent my time on the side of the road, and the phone dealing with it, on our old dodge ram 15 passenger vans. We tried many solutions, including putting a second electric fuel pump near the gas tank as a push pump to speed the time the gas was in the fuel line. Sort of worked. In the end, I called the Dodge engineers directly, and they suggested dumping a quart of transmission fluid into a full gas tank on fill up. It changes the vapor point in the gas, and evidently(according to them) doesn't hurt the engine, actually works as a lubricant. Don't know if it hurt the engine, but never got vapor lock in that part of the country ever again!
I like your solution better Ken!
And while we are on the subject of fuel lines, since my new fuel tank is in the bed, and not the cab, the person who started this project, routed a rubber fuel line down the frame rail to the cab. Should I replace this with a metal line, or any special fuel line you would recommend(sorry for the highjack, but oh the questions and memories this thread brought up!)