Kris, the YS is not all that complicated. As a matter of fact, once you see the fuel line illustration that's in the manual, it's actually pretty self explanetary. The YS already has a pump and regulator and you can mount the tank on the CG so the plane flies similar from full tank to almost empty. See below. First photo shows how you just pt a "tee" in the lines. The line on the left goes to the clunk, and the one on the right goes to the tank vent. The fuel line on the "tees" just goes down to the bottom and comes out the bottom of the cowl. (see next photo)

..........Mark