Installation:

1. Start OpenIV
2. Navigate to GTA 5\update\update.rpf\common\data\levels\gta5
3. Replace vehicles.meta with the one included
4. Close OpenIV and enjoy


Already have a vehicles.meta mod and want to combine it? Assuming you know what you're doing, find the <audioNameHash /> section for the the Schafter, Schwartzer, Serrano, and Surano's vehicles.meta entries. Replace each with these:

Schafter sound:
<audioNameHash>GLENDALE</audioNameHash>

Schwartzer sound:
<audioNameHash>SURANO</audioNameHash>

Serrano sound:
<audioNameHash>DUBSTA</audioNameHash>

Surano sound:
<audioNameHash>COQUETTE</audioNameHash>