The drive by wire kit that is installed in Imprezas and as part of the touring package on Foresters will fit an NA forester. Below is a pic of the Subtle Solutions dead pedal and the brushed aluminum alloy pedal kit from Subaru installed in my 2010 NA forester. Several people tried to tell me it would not fit/work. Subaru of America said it would so I tried it and it does work. Just so that everyone knows the stock pedal part number ends in 40 and this part number ends in 50. It is a direct OEM replacement. The brake pedal is just a cover and goes over the brake pedal like the stock rubber piece does. The gas pedal is one complete assembly and is held in with two bolts and the drive by wire sensor/pedal sensor or whatever it is called plugs into the top.
The part number for this pedal kit is as follows.
Accelerator Assembly 36010AG150
Brake Pedal Cover 36023KE000