Michael, Franklin and Trevor will each receive a message from Lester saying he needs three modded Gauntlet automobiles for the heist and gives them the locations:
The first is at Pillbox Hill on the top level of a multistory parking lot.
The second is at the back of the Vangelico store in Rockford Hills.
The third is at the Front of the Templar hotel south-east of Leighton Square.
Once the car is obtained the player will have to purchase the necessary mods for the car and deliver it to the lock up.
Take the getaway vehicle to Los Santos Customs
When you have obtained the vehicle, take it to Los Santos Customs.
Tip! The Gauntlet's that you
stealdon't necessarily have to be from the locations Lester gives you. Any Gauntlet will do. Though the gold medal requirement for these missions is to obtain them from the locations Lester emails through.