GTA IV: New Tuner Car Sound Pack

¿Always unsuccesful to find proper tuner-ish or 6 cylinder engine sounds that aren't always focused on just replacing the Subaru Boxer (RALLY_RACER) engine sound from the Sultan & Sentinel?

Say No more; here's the new collection of brand new, well, it's actually a re-work of pre-existed sound mod files, being re-converted for those who passed-by the modding radar, back in the day; meant mostly for modders who want an specific engine sound from the lore-friendly community that wanted to meant something. That now focuses to gave the I4s, V6s, I6s or V12s the prefect growl or howling that it deserves, without spoiling too much for other cars that are mundane-looking that can be also sharing those afromentioned engine sound files.
The upgraded engines are in next selection are:
-LUXURY_CAR_1
-4_CYLINDER_SPORT
-4_CYLINDER_SALOON_1
-HATCHBACK_1
-HATCHBACK_2
-SANCHEZ
The instructions, credits, sound assets origins & the set-up to make it work are in the notepads.