They definitely need modified. Guy I used to know back in the day used to have a spare key to his dad's Renault 25 turbo I think it was. The big one anyway! Didn't have the key for the disk lock but 2 seconds with a flat head screw driver and it was off and he used to take the car out and kick fuck out of it then park it back up in the early hours and put the disk lock back on and his dad never had a clue