Hey i recently bought a used civic with an aftermarket motor in it, kinda a noob in the civic world haha

the motor block is red and Says Mugen than some japanese letters

i know mugen is a well known company but i cannot find this exact motor anywhere? any help please?

 

Take a clear pic of the markings and post it.

 

The valve cover is mugen not the engine.... take a pic of the engine and of the engine code..........