The model is a scratch built Tutor jet, as flown by the Canadian Snowbirds. The tank sits over the CG and above the wing seating. The tank feed outlet is 1 1/4" above the carb, and is located 2' 2 1/2" forward of the engine (which is in an inverted pusher mode)

Hope this helps. But gravity is feeding the fuel without the pump when the plane is in normal attitude.

Spar