Installation:
OpenIV and go to this folder
C:\Program Files\Rockstar Games\Grand Theft Auto V\mods\update\update.rpf\common\data
then copy this line of code into your DLCLIST.xml
dlcpacks:/wayne/
Save and close
use either Add On Car Spawner or Enhanced Native Trainer
Spawn with: wayne
ACS: 1974 Wayne Busette Mini Bus\wayne
Bugs Non but please report if there is any thanks
Credits:
G1Convoy
We Need School Buses in GTA 5 Story mode