We recently had a customer come to us because he was having a clearance issue on his 2003 VW GTI. The issue occurred because his car is equipped with air suspension. When he lowered his car down, the passenger side axle was hitting the frame rail causing the axle to bend and premature wearing on the sway bar. We had just the remedy for him, a c-notch!
We created a relief in the passenger side frame rail and reinforced it by tig welding in a three inch tube. This created a space for the axle to tuck into when the car is lowered thus solving the clearance issue. Our customer was very happy with the result.