Need advice: Best way to squeeze the most HP out of 1st gen mazda3

P5_2003_tuner

Tune it to Boost it
:
2003 mazda protege FS hatchback
Looking to get as close to the mazdaspeed HP as possible. What brands and combos have worked the best for everyone? I'm looking to get parts and finely tune a NA sleeper with the stock motor.
 

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