What do you want to edit on cars? Tex or lod files?
The best tool to edit .tex car files is TexResizer.
1-Open cars.wad from your GP4 folder (by using wadupdater). Then , extract wad. (a carwad folder is created with all your tex and lod files)
2-Open TexResizer, then choose the tex file you want to modify. Save all tga files from the tex file you've opened.
3- Modify the tga files (with paint shop pro or Photoshop)then save it.
4-In TexResizer, load all the tga files you have modified. Then select save .tex file
5- Now your tex file is modified, save it into your cars.wad folder
6-With wadupdater, select your carswad folder , then click on "create wad" and replace it into your GP4 folder.
That's the simplier way to do for me and no GP4 crash!
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