It's because you need to do the opposite m8 . In SLRR Editor, click any car you want in the list, then "click edit engine blocks" and "check ON the engine squares" instead of check them OFF, this is why you can't use any of your engine mods in any of your car mods.
yea i did check the box's, iv'e used the editor before but idk whats going on, i can see the motors in the engine kits but i can't build them.
Added 4 minutes later:
side note dose anyone have a link for the 1990 chevy silverado/GMC pick up, i can't find it in the DL section anymore.
. In SLRR Editor, click any car you want in the list, then "click edit engine blocks" and "check ON the engine squares" instead of check them OFF, this is why you can't use any of your engine mods in any of your car mods.