It has a vague look of a P36, but the sketch lacks the characteristic undercarriage. It has a 1000hp engine (maths) and space for a huge fuselage fuel tank. The rear seat would have to be occupied or ballasted all the time to avoid CG problems.
So I go for a never developed Curtiss project for a long range two-seat fighter, dating from the late 30s or early 40s
Dick