Use OPENIV and replace sanchez2.ytd and sanchez2+hi.ytd in:

update/x64/dlcpacks/patchday3ng/dlc.rpf/x64/levels/gta5/vehicles.rpf 

Vehicles.meta now includes sound swap for BATI and BATI2 

Use OPENIV and replace vehicles.meta in:

update/update.rpf/common/data/levels/gta5