The manual specifies an 8yr change interval for emission hoses. Does it refer to just the pcv/breather hoses or are there others? When I went to the shop to get replacement parts, the guy at the counter suggested a replacement hose which I didn't recognize - quite short ~2-3in, ~0.75in diameter.

And just to be sure, the the pcv/breather hoses are connected to the 10 o'clock and 3 o'clock positions on the throttle body right?