Headers may add 3-5 hp depending on design and a cold air intake will add around 4-7 hp for a total gain of 7-12 hp untuned. Definitely worth it especially with the nice throaty sound you will get out of it.
Not Much!
97 mustang gt has 215 horse power
They do give more horse power
about 6.93 HP @ 4825 RPM and more with a tune
A mustang is a horse too. The name comes from the term "horse-power".
intake manifold and headers or replace with 350
About 5 Wheel Horse Power. Same as today!
They help the engine "breath" better.
mustang is faster with 432 horse power
300
not enough!
250