ok so i have a 2001 ford focus se and i am debating on buying a new car or just spending the money to customize this one if i keep this car i would like to get a body kit put whatever i can in the engine and all that

now am not too car knowledgeable so what i would like to know is
what are the things i can do to get more horsepower and speed if you could include names and a description of what they do and some estimated prices that would be great thank you!


i want to know EVERYTHING i can do to it