I was reading through some old threads and killing time. I came across this thread about 1973 2.0L survivor. In post #43 there is a picture of the vacuum hoses on this car.

http://www.914world.com/bbs2/index.php?s=&...t&p=1765519

But when you compare how they are hooked up to the vacuum hose diagram located at Bowlsby.net

https://bowlsby.net/914/Classic/zTN_FI_Hose...3-Early1974.jpg

You can see things like the PCV valve hooked into the air box and the AAR hooked into the plenum (while also connected with the decel valve via F connector). I have mine (early 1974 2.0L VIN 4742905987) all hooked up like the one on bowlsby.net.

My car is running fine in general, but as I look at varying pics of people's vacuum hose layouts it is always confusing...