1st off, i race integras in a ministock class.

can i eliminate the factory brakes and put my own brake system in the car? will it mess up any vacum? i want to put in wilwood brake pedal and master cylinder. the vacum brakes makes it had to 2 foot it for me.

 

Yep, there are some build threads going in the Appearance Builds section with people doing things such as that.

There is also a Brakes forum here on H-T that you might want to look in and possibly ask this question there.