So I wanted to change the sound of the cars available in the vanilla game (and some from the Improvement Mod addon, which was used as a base) to different other correspondent found in the game files. It is available for the vanilla and addon (eg. Improvement Mod and perhaps Ultimate Mod).

Summary:

• * - Changes for stock vehicle;
  
• ** - Changes for upgraded vehicle;
  
• + - Changes for both stock and upgrade.
  

Changes (for vanilla):

• **Nissan 240SX (S13) Upgraded [hon_prel (Honda Prelude), fully upgraded 240SX from NFSU2); [for_mus_b, stock Mustang GT from NFSMW]
  
• *Chevrolet Camaro Concept [for_mus_b, stock Mustang GT from NFSMW];
  
• *Ford Mustang GT (S197) [for_mus_b, stock Mustang GT from NFSMW];
  
• *Ford Shelby GT500 (S197-I) [for_mus_a_gt, stock Mustang GT from vanilla NFSC];
  
• +Vauxhall Monaro VXR [bmw_m5_a (from BMW M5), for_mus_a_gt, both used for NFSMW's Monaro];
  

Changes (for Improvement Mod or Ultimate Mod):

• +BMW M3 (E46) [bmw_m3_a; bmw_m3_e (BMW M3)]
  
• +BMW M3 CSL (E46) [bmw_m3_e; bmw_m3_c (BMW M3)]
  
• +Cadillac CTS [chv_cav_a (Chevrolet Cavalier), chry_srt8_exh (Chrysler 300C SRT8)];
  
• **Chevrolet Corvette C6 [corvette_c5_exh, used for upgraded Corvette Z06)];
  
• **Chevrolet Corvette C6.R [corvette_z06_v2];
  
• +Mitsubishi Eclipse GS-T (2G) [chv_cav_b (Chevrolet Cavalier), mit_eclip_b (Mitsubishi Eclipse (3G)), used for NFSMW's upgraded Cobalt SS and stock Eclipse GT (4G) respectively];
  
• **Pontiac GTO (2005) (including police vehicles) [corvette_c5_exh, used for upgraded Corvette Z06)];
  
• +Porsche 911 GT3 RS (997) [por_dp6, por_gt4r, from NFSMW's 911 GT2 and NFSC's vanilla 911 GT3 respectively].
  

Installation:

• Open VLTEd, go to the top bar and click on File>Import>ModScript or just press Ctrl+I;
  
• Find the folder you have put the files and select the .nfsms script (whether is the separate script or the whole package script;
  
• Once the script is imported, click on File>Save or press Ctrl+I;
  
• Run the game.
  

Credits:

• nfsu360 - VltEd 4.5, VltEd 4.6;
  
• 379Felipe; GXP-10; nlgzrgn; Speedyheart; Sparx; Neon; RaTT and Xanvier - NFSC Improvement Mod and Ultimate Mod.
  

Tools used:

• VltEd 4.5, VltEd 4.6.
  

Enjoy!