I haven't considered it, no, but at the moment I am getting carried away restoring the car than driving it
A friend and I went to replace the o2 sensor, but it's well jammed in the header so we popped down to Pick-a-Part but all the 2L subaru's had the headers sworn in half, I guess to get the CAT out easier, FML.
In saying that - would anyone know the part number or what 3 wire o2 would fit an EJ204 ? The internet doesn't know about these motors until 2005+ ararrrgh