Your chassis appears to be a post 2014 one Wilson, looking at the second photo that you have of the steering rack support. The steering rack supports have not changed in production, they may have got that bit right at the start. As it is a post 2014 chassis it should not be prone to cracks in the two known locations that pre 2014 chassis suffer. Your brother cars, being post 2014, will not be subject to chassis inspections or brake pedal box inspections.
Your car, with its "M3W" laser cut pedals, will need the brake pedal inspection. I would suggest you press the whoever to get the mod bracket installed to the brake pedal linkage if there are signs of a weld on the actuating arm or not.
Last edited by planenut; 05/07/1909:58 PM. Reason: Relative problem