You knowwhatWelding the diff isn't the best idea especially in a WRX.It can lead to unpredictable handling especially in corners.A lot of folks say it's a great fix but the risk of damaging your gearbox and tires is real.Also think about how this could ruin your driving experience.Maybe it's better to invest in a new diff?These decisions need to be well thought out.It's better to spend on something that works than risk everything else