Should this be facing towards the inside or towards the outside of the car?
That should slide on first…because the mount for it is flared out on the inside end.
its currently on the “correct” way but turning it the other way would reduce the negative camber and I wouldn’t need to purchase rear upper control arms
any harm on putting it on the other way?
Good question, I’d like to know this as well. I just installed the same set in my car it looks like, I gotta buy the camber correction kit for the back too.
B-Wurm 
What kind are those? Flex’s?
Look sweet!
All you would be doing is flexing that bushing and wearing it out much faster…its not worth it.