You can do it by removing the steering hydraulic unions in to the rack and the column clamp in the footwell, then lower the rack with the subframe. I've done it that way and by unbolting the rack from the subframe. The former is a little awkward for access to the unions. The latter is a finger shredding b*****d of a job with loads of bolts needing fairly high torque to release them with very poor spanner-only access and only finger strength to move them, and that crappy silver heatshielding sh**e removing some skin every move of the spanner.