download Alci's SAAT GUI frontend on gtagarage for replace they sound and save after and play just^^ i have used audacity for record the sound in a video and i have select they good sound and formated by wavepad and insert in GTA SA with Alci's SAAT GUI frontend well if you want to have other cars send a video with only the cars sound accelerate decelerate stopped and at max of speed
the sound of chevrolet corvette stingray of nfs uc in gta sa replace bank_039 and bank_040 (Sabre, Savanna, VOODOO, CLOVER, Blade, Buccaneer, Stallion)