GTA 5 Online Secret FIB Cars Location Plus Store In Garage
you can get a couple of FIB police cars from a specific location on the map at a specific time and this does not require any glitches,at 1000 till 1145 there will be scientists and FIB cars ( buffalo like Franklin's Car car and a 8 seater 4x4 like the police SUV.
you wont be able to modify them but you can get a tracker and insurance. Plenty of videos on youtube that will show you how to store in garage..
Go to the location shown at the start of the guide below to see what and were and ENJOY may be useful when Heists come