This is NASA's newest rocket, the Space Launch System (SLS). The in-game rocket is a little larger than in real life, but the Mobile Launcher Platform (MLP) is around the same size.

The actual dimensions for the SLS are:
Height: 322 feet
Main Core Width: 8.4 meters
Solid Rocket Booster Height: 54 meters
Solid Rocket Booster Width: 4 meters

The Mobile Launcher Platform dimensions are:
Base Height: 25 feet
Base Length: 158 feet
Base Width: 133 feet

The Launch Umbilical Tower is 355 feet tall.

I hope that y'all can enjoy this map. Or something like that. If it works.

Sorry for not including the download earlier, it should work now.