If the wing is a separate part then, you'd add lines into the body config file under [Tuning] section. Look at some other mods body config files to see what I mean. I'm not a modder so, I maybe erring in my logic. I only edit mods.

thanks, i ,might merge them into one object

it's done in the bodyconfig file, but not under tuning, but in the main part. It should look somethng like:

[unmount_with]
trunk=clamshell_rear

where clamshell_rear is how you should name the wing.

I decided to make it apart of the trunk , its for a 2004 Pontiac GTO

So, you're going to have a optional trunks then....like Trunk & Trunk B where one would have the tail fin and the other doesn't. Right? I mean if you're making the mod to load up on Workshop....some don't like tail fins.

true, id do one without the wing eventually if i can get the darn mod to show up in game editor , i am missing a step somewhere , i did everything the pdf tells me , has to be the mod creation process itself i guess

I think the modder's have a Discord channel which you could get some live help from them. Look through most recent mod discussions to find it.

Ok