There will be a load of free siding space in Northwall when all the Mk3s are scrapped, not a very secure site though. There is the valet plant in Connolly, only one road of that is used at night to stable an Enterprise set, think the other road is always free. It was used to stable the Sligo Mk2 set and then the backup Cravens set back in the day. Doubt IE would let them use it though.