I don’t know but @Robert might. Not sure of the story on why the switch to stim-free. Stim-free supps almost always sell less than their stim-based counterparts so some people will be bummed after seeing those YouTubes.
Curious about 2g ribose along with 100mcg huperzine A, could still provide a touch of that ‘feel’. Never taken that much Ribose, I know that Matt Porter likes to dose it up too.