Help retroarch in emuelec

does emuelec for tvbox use retroarch? i would like to add core MAME 2000 (037b5) and i don’t know where to download and how to install? i have this fullset of roms and i would like to use it

I think EmuElec usually comes with all of the cores it can use bundled together. Not 100% on that, though.

emuelec 4.6 not core mame 2000 037b5