@Frosted Flake This is just using several scripts in combination by attaching two vehicles and hiding parts of the vehicle so it doesn't look janky. You can make your own custom vehicles using similar techniques. Each vehicle has different turret positions so it's not a one size fits all thing so I cant exactly make a tool for it without a lot of work and testing. Go into Editor > place the composition > double click on each vehicle > inside the init box you can inspect and edit the script > copy and paste it into your own vehicles init box and tweak it to your liking > save as new composition

Ideally, I'd like to do this with other vehicles but I have no idea how to use EDEN configs. Would it be possible to have a tool for placing various turrets on various vehicles?

Nice one! I am thinking of uploading my compositions too...