The factory IC piping seems to be the worst for interference with the PS return line. When you try to joggle the NA line to clear the oil cooler mount, it shortens it too much. As you said, the TT AC lines and the NA PS line occupy the same space. I think the factory TT PS line is still available. Personally, I have a factory TT line that is damaged that I use as a pattern to bend a new one from tube stock.
