Extreme Flight 125" EXTRA 300 Assembly Manual page 14

22. There are plywood tabs supplied for mounting your fuel tank. These are pushed up
from inside the pipe tunnel and should be secured with epoxy. Due to the wide range of
engines that will be used a gas tank is not provided. We have started making our own
tanks from 64 ounce juice bottles using brass fittings available from B&B Specialties.
Please see the following picture showing our home made tank and installation.
23. Throttle servo installation and linkage set-up will depend on the requirements of the
engine you are using. As such there are no provisions supplied for the mounting of the
throttle servo.