Drop Spindles

Just leave them off. They serve no real purpose other than to trap dust close to the rotor and impede cooling airflow. In theory they would keep some splashing water off the rotor, in reality, not so much.

Most (if not all) new cars don't even come with them. I haven't had splash shields on my daily driven Challenger since I installed the magnumforce drop spindles over 2 years, and nearly 20k miles, ago. No issues.