you need to remove all the plastic trims and panels around the inside of the car that travel to the roof lining to be able to drop it . ie , inner windscreen trims that travel up to the roof , the seatbelt upwards trims , rear inner quater panels by your back seat/parcel shelf area , plastic trim across inside rear of car between rear quarters , sunroof and door rubber trims , all inner roof grab handles/lights etc etc . you get the idea . the roof lining is very easy to damage so be careful !