1. Go to update/update.rpf/common/data,
Find dlclist.xml,
Right click and select Edit
Add this line in Paths section

dlcpacks:\ka52a\
press save


2. Make a folder named " ka52a " , in update/x64/dlcpacks
drag and drop inside file you downloaded.

3. Start the game, spawnname: ka52a

Livery: Grom
Author: SkylineGTRFreak