Could the ride height adjustment be controlled via adjustable either torque bar or floor? The cars suspension actually has no need to move at all, all they need to do is drop the floor height slightly. This could be done quite easily using air pressure at the pit stop. After much searching I've found a picture showing the cars wheel nuts (well one of them) and it has a hole in the middle. All you need is a valve in that to allow air in through a tube in the suspension to a piston in the car. This would be adjusted when you change the tyres making it easily adjustable and set via air pressure. The guns are pneumatic giving you an air supply.. Just and idea, feel free to shoot me down! Here's the photo I found, its not very clear but there aren't very many photos of the cars wheels.