Need help with duplicated items.

So, I downloaded some duplicates from the workshop, mostly vehicles, but the controls they have aren’t comfortable, so, I want to know if there is any way to edit their controls to the buttons that suit me.

Example: I download a flying car. This car uses the arrow buttons to move around using thrusters (I still don’t know how it turns left and right, because all thrusters activate at once, but you get the idea), uses o to up and l to go down using hoverballs, I want to change the controls, so that numpad 4628 replace the arrow keys, and 93 replace up and down.

How do I do that? Any help greatly appreciated.

Well the only way I could think of doing it is to manually change each thruster to be set to a different control using the thruster tool, same with the hover balls