Replace car glitch

FluffsDucks

Hello I installed this mod correctly but the tuning parts are glitched and flying please help! 2015 Dodge Challenger [HQ | Super Tuning | Hellcat | NFS2015 | Animated Engine] is the name

a63nt-5m1th

@FluffsDucks
Author says:
WARNING: REQUIRES JANURARY2016 UPDATE DIRECTORY TO BE ABLE TO BE INSTALLED, IN OTHER WORDS YOU NEED TO HAVE SULTANRS UPDATE FULLY INSTALLED FOR THIS TO WORK!

Also in a pinned comment he says:
DID THE TESTS TO TRY AND REPLACE SABREGT2, SEEMS THE NEW WAY ROCKSTAR MAKES CARS USING BASE VALUES FOR EVERY SINGLE OBJECT IN THE CAR DEFINED AS TUNING PART MAKES IT IMPOSSIBLE TO BE REPLACED BY ANYTHING ELSE BUT SULTANRS. SEEMS IT WAS A HORRIBLE CAR REPLACEMENT PICK FROM MY SIDE AND I APOLOGIZE.
THIS MOD WILL NOT WORK WITHOUT LATEST SOCIAL GROUP PATCH VERSION AND WILL FORCEDLY REQUIRE FOR SULTANRS.

DID OTHER TESTS TO MAKE AN ATTEMPT TO MAKE IT WORK WITH OTHER PATCHES BUT IT SEEMS, SOME OF THE TUNING PARTS USE UNIQUE VALUES THAT ONLY SULTANRS USES, THIS MEANS YOU DONT HAVE OTHER CHOICE THAN UPDATE GTA TO THE LATEST VERSION TO MAKE THIS MOD WORK.
NOW I APOLOGIZE FOR PICKING SULTANRS, MY GTA IS ALWAYS UPDATED SO I WORK 100% OF THE TIME AT NEWEST VERSION.

As long as you have all those requirements installed you're probably looking at issues with 'carcols.meta' or 'carvariations.meta' settings.
Did you replace all the files contained in the download? The ones from the 'SultanRs Replace' and ALSO the ones from the 'Data' folder structure? You need both lots of files for it to work .
Also, you haven't made any edits to any of the files have you? Or tried to replace a different vehicle to the sultanrs? Both of those will probably cause problems with that car & should be avoided.

Off the top of my head these are the most likely reasons the upgrades are messed up:

Carcols:
Check & see if you have a 'carcols.meta' here:

...\Grand Theft Auto V\mods\update\update.rpf\dlc_patch\mpjanuary2016\common\data\carcols.meta

If so, replace that 'carcols.meta' instead of following the 'dlcpacks' folder structure in the download.
Note: If you have already edited that carcols file for different vehicles etc, you'll need to merge the files (copy & paste in the 2015 Dodge Challenger sultanrs block/s of data overwriting the original/s) if you want to keep all the edits.

Carvariations:
Also, check the 'carvariations.meta' file here:

...\Grand Theft Auto V\mods\update\x64\dlcpacks\mpjanuary2016\dlc.rpf\common\data\carvariations.meta

or if one exists here check that instead:

...\Grand Theft Auto V\mods\update\update.rpf\dlc_patch\mpjanuary2016\common\data\carvariations.meta

& make sure the SultanRS kits line looks like this:

      <kits>
        <Item>130_sultanrs_modkit</Item>
      </kits>

Let me know how you get on with that