Ok Rab, i never Knew that was extra, all good.Hi james what did i charge you, if you paid £450 then that would have included the extra option of locking when pulling off added, the Gtr unfortunately only use to do this on the cba cars so alot of owners use to ask for this function which is something that we added to the ghost and offer it at additional £50 at the time installation. So may be that's why you paid £450. I charge all forum members £400 for just the ghost or £450 fitted with the extra locking option added. I hope this clears things up for you. James if you have any issues you are welcome to contact me 07973733441 and i can put your mind at ease my friend.