@Kranks If you search there are a few threads already about them. KU/BU/TU are all the same thing and have been identified as dimethylpentylone (aka dipentylone) and 8FA is some sort of cannibinoid.
@DoomKitty thank you so very much for your reply, you're a huge help! And I'll make sure to search before posting next time. Not sure what I was thinking.