Yo , i need this mod beacuse in one mod , the rear suspention is broken. I know that its gonna be a really really hard work. ( i post it cuz i am really bad at doing mods )
I'm afraid it's not that simple. At best, you'd have to edit some nodes and adjust the model to do this, you can't just move parts up or down with one button.
If the rear suspension is too low and it cant be tuned you're out of luck, you will have to change the mod parameters themselves.