Anyone ever done this? We were at the track with a STi that puts down 560wtq, and upon a perfect launch and a super sticky track (was a closed session so the track was very prepped) we snapped the rear diff pinion right in half. We are looking for an upgrade but haven't had much luck finding one. We really don't want to put stock back on there and have this happen again. Albins said they don't make one, but they could with a lot of time and money. Anyone know of anyone who already makes an upgraded rear diff pinion for a R180?