The Mako is a ramjet assisted experimental fighter, a peculiar hybrid that uses two propulsions: a conventional propeller for take off and landing and a ramjet engine that takes over when the craft reaches 250 mph.
P-51J Mako fighter was supposed to appear in Red Alert 2, but was cut from the game at an unknown time.
There was a real-world prototype of this fighter. In 1945, one P-51 "Mustang", loaned to RAF, was equipped with experimental ramjet boosters. // Chris Gibson, Tony Buttler British Secret Projects — Hypersonics, Ramjets & Missiles. — Midland Publishing, Ltd, 2007.
The P-51J Mako fighter Appears in the Mod Yuri's Revenge: Zero Hour as a Soviet Unit.
The name and design of the unit suggests it was inspired by the P-51, a real life fighter used during WWII.