This new engine is on the test bench at the time of writing.

"B2 Engines, prototipo"

From appendix A3/6: The engine in the main text is now being installed in a diminished version of a Mustang T-51.

"B2 Engines on dynamometric bench"

-The engine is known with reference GX-1 and is turbocharged to give more than 150 hp with a displacement of 1.3 liters.

-It is not yet certified by the FAA so its use is limited to experimental aviation.

"Just as it looks on the mini-Mustang"