Thank you all very much, this is an amazing wealth of knowledge. Really saved the day.
So I just changed the engine in my Sons 2011 Subaru Forester. I installed a 2016 engine. The intake ports on the 2011 are smaller then the 2016 block, so I had to use the 2016 intake. I changed the harness, all sensors, valve covers, coils, timing chain cover, flywheel and crank sensor/plate and the water pump. The 2016 engine donor was in a collision, the water pump was pushed in, found that out on start. Really glad I hadn't put coolant in yet, had to hear it start before going farther. I missed the Cam plates, I didn't change them, and the cam solenoids were thrashed. I just finished about 3 hrs ago. 4 codes P0018 - P0016 - P2006 - P2007, Cam sensors and choke sensors. Purrs excellently, even with the codes.
I need to figure out all of the choke variants, I've read so many of them in this thread my brain is over loaded. I have both intakes still, I gotta re read this a few times after some sleep. Sucks that the intake tubes are different.
The bonus coolant line on the passenger side, I took a bolt snug to the size of the hose and put the clamp on it. Make sure the bolt isn't threaded all the way up, you don't want the fluid to follow the threads out of the hose :P. As a kid one of my Dads friends did it for a destruction derby car, if it works on that kinda abuse... It should be good till the hose goes bad, years and years.
Edit/update. So reading through this while a bit more awake. With the polarity differences it says the chokes are closed, but starts a bit slow, and runs great warm I'm guessing its reading closed, but is actually opened. I've decided I am going to use a piece of Aluminum and gasket material to fill the gaps and install the 2011 intake. Like a 1/8in adapter plate if you may. Keep with the 2011 intake to avoid all the conversion craft. < Not an engineer, more Junkyard trial and error :P (I have lexan laying around, I thought of using that at first but it may get soft and leak at operating temps, so Aluminum I will try :P)
We did the install of the engine with about 3in of snow on the ground, outside under an yard pop up pavilion. So all of that will wait till its a bit nicer outside, feeling in the fingers and toes would be nice. The codes can hang around a bit, it runs really well, I put about 150miles on it this week, mostly getting the antifreeze out of the exhaust from the blown up engine. First 70miles or so, it had one hell of a smoke screen, cooking off the antifreeze out of the exhaust o.o .... After life calms a bit I'll rip apart the old engine and see if its salvageable, spare for my Son to learn on.