Chris, it's setup to run on methanol vs race fuel. CHEAPER and COOLER TEMP. If you want to change it over to Racefuel then it's a single piece you have to get from Jeremy. In other words it comes with 2 tanks, one tank gets methanol the other gets NOS. Plumb it to the head or boot. stay with whatever fuel you run with in your OEM tank. It's still in the box, never used only taken out to admire.