This is the compatibility patch for those that want to use more than one of these mods but can't figure out what to do to make them all compatible.

Update1: GTA Realism 0.7beta is added
Update2: Updated to work with RDE v2.1 and IVPack Part 4(v1.0.035) and with the latest game version(V1.0.573.1) GTA Realism and Lower End Car variants are removed for now. GTA Realism will be added back when it gets updated and Lower End Car variants will be added back in a few days at most.
Update2.1 :Lower End Car variants support added back in, now IVPack Part 4(v1.0.040) is supported. Now there are 7 different options to choose from.
Update2.2: BCSO Addition Project compatibility from RDE added, making a total of 13 options.
Update3: GTA Realism Support added back in, meaning there are 19 options to choose from. Please report bugs is there is any since I don't have time to test it right now.

The mod authors:

IVPack:
_CP_
RM76
TheAdmiester

Lower end car variants:
TheAdmiester

GTA Realism(Also includes Realism Dispatch Enhanced, Hollywood Rollover and Towing Service):
Mkeezay30
Dilapidated
Yard1
BobJaneTMart
Bilago
SkylineGTR
BroCop
Eddlm
H2Awesome

Realism Dispatch Enhanced(Also includes Realism Dispatch Enhanced - Five Star Response Script Addon):
Creator: Dilapidated
Co-Creator: mkeezay30
Co-Creator: Yard1
Co-Creator: BobJaneTMart
Co-Creator: Bilago
Co-Creator: SkylineGTRFreak
Co-Creator: BroCop
Co-Creator: EddIm

Realism Dispatch Enhanced - Five Star Response Script Addon: Bilago

Towing Service: Eddlm

Hollywood Rollover: Eddlm

I do NOT take credit for the making of there mods. I ONLY take credit for the little work for the compatibility patch and that is it.

Also please let me know if I missed a person that needs to be credited and I will fix it.

Reqirements:
1)Scripthook: http://gtaforums.com/topic/788343-vrel-script-hook-v/
2)OpenIV: http://openiv.com/
3)Community Scripthook V .NET: https://www.gta5-hub.com/tools/scripthookv-net
4)IVPack Part 4(v1.0.040) :https://www.gta5-hub.com/vehicles/ivpack-gtaiv-vehicles-in-gtav
5) Lower End Car variants V0.4.1: https://www.gta5-hub.com/vehicles/lower-end-car-variants-standalone-dlc
6)GTA Realism: https://www.gta5-hub.com/misc/gta-realism
Optional(Included in GTA Realism):Realism Dispatch Enhanced v2.1: https://www.gta5-hub.com/misc/realism-dispatch-enhanced
Optional2(Included in RDE): Realism Dispatch Enhanced - Five Star Response Script Addon v.1.0.0.3: https://www.gta5-hub.com/scripts/realism-dispatch-enhanced-five-star-response-script-addon
Optional3(Included in GTA Realism 0.7 Final):Towing Service 1.3: https://www.gta5-hub.com/scripts/towing-service
Optional4(Included in GTA Realism 0.7 Final) Hollywood Rollover: https://www.gta5-hub.com/scripts/hollywood-rollover

Note:Before installing make sure to have backups in case something goes wrong or you need to play GTA Online or would like to uninstall this patch.

Installing the mod:

1)Make sure to install desired mods beforehand.
2)Unpack the Compatibility Patch.rar
3)Choose the desired option
4)Launch OpenIV
5)Enter edit mode
6)Locate to update.rpf file and open it
7)Go to common\data
8) Copy dlclist.xml, extratitleupdatedata.meta and gameconfig.xml files to update.rpf\common\data
9)Now go to x64\levels\gta5
10)Copy popgroups.ymt file to update.rpf\x64\levels\gta5

If you didn't understand something, have a request for a mod to be added or deleted from this patch or would like to contact me for anything considering this mod, reply to any comment made by me or use this prefix: @RichardNord
That will let me get back to you sooner.
Also please let me know what do you think about it by commenting below.

This mod will be updated whenever the game gets updated or a mod is added or deleted.

If you would like to see different options, let me know.

Also, it is highly recommended to tweak popgroups.ymt for your personal taste.