Yep, that's going to end well
another engine proposed for SLS is the Aerojet AJ-26-500. It is a remanufactured and up-powered Russian NK-33, which itself is an evolution of the NK-15. NK-15 was the engine used on the 1960's Russian N1 moon rocket - the one that went 0-4 in its test launches before being cancelled, ending Russia's manned lunar ambitions.
The NK-33 engines Aerojet is modifying have been in storage for almost 40 years.
A lower powered version of AJ-26 will be used by Orbital Sciences for their new Antares launcher. Antares is to launch Cygnus, a cargo-only disposable spacecraft that's to attempt an ISS berthing later this year. We'll see.