There is a jato texture fix in this thread on page 139. There are two files, you have to try which one works since i dont know. The first one adds pbr too
A remaster would be better. Remaking the entire car & combining both Kashira mods into one would be a masterpiece waiting to happen.
File stuff You need to create a new folder in the kashiras vehicle folder and put the files from the three other folders into it