First off, Jim put in alot of research, effort, and a huge AMEX bill to figure this out to Toyota specs, many thanks to him. Having nearly completed this exact install, It is one for the land cruiser addict who absolutely loves clean factory specd modifications and is willing to spend the time and money making it happen.
I am almost done with this install and am in the process of getting a few more very small parts to make it 100% OEM. Ok, 99% OEM 
I dropped my main tank and had it modified to install the fuel level switch instead of buying a new main tank (See first picture of location before reinstallation).