No, you want the F-108N.
I think the F-105N might be the correct valve for pre-2012 Imprezas, but I'm not sure about that. I also don't know the correct fitment for 2012/2013 WRX and STI.
The F-108N is the correct valve for 2012+ Imprezas with the 2.0i normally-aspirated engine. I'm certain of that.
Here's your price to beat: