NFS ProStreet engine sound mod
-Nissan Skyline GT-R R34 (stock) (now uses NFS Undercover's stock engine sound)
-Ford Escort RS Cossie (both) (now uses NFS Undercover's values, since it's not a Subaru)
-Pagani Zonda F (both) (now uses NFS Undercover's engine sound, since it uses V12 AMG engine, not a Lamborghini's V10 engine.)
Open the Installation.txt and follow the instructions.
Note: Sorry for my bad english.