custom sounds for a single car?

hey guys, Id like to ask, what I need to do , that a car, like the cadillac or any car has a custom sound without just changing the cheetha_engine. I have a soundfile and want to set this up for a single car like the DelSol. Does anybody of you know what I have to do that this works ?

 

TUTORIAL-Unique-engine-sounds-for-vehicles

Scroll down to Mr.Hankey's post to do it like everybody else does it.

 

That post has an outdated lua file though.