I just purchased my first mustang, a 1998 gt 5 speed, it sounds amazing but it seems really slow to me. i got beat by a v6 infiniti too. my mustang is a 4.6 with deleted cat converters, km cold air intake, aftermarket throttle body, an x pipe exhaust, and even 3.73 gear aspect ratio, i don’t see why it would be getting beat by a v6 with the mods done to it