Put GTAIVGunFirePistolSound in to modloader folder. 
(This sound mod replaces the silent pistol's sounds)

This Audio mod works better in silenced pistol because if you use the 45 pistol it will sound like a chipmunk.
To have the Silenced Pistol's Fire Rate like the 45 pistol,(THE DATA IS OPTIONAL) put the data folder in to GTA SA's Root Folder and replace weapon.dat, or either leave it in it's folder. In the modloader folder. 

