[Boneyard]

I've got a 93 GTP (3.4L) with anti-lock brakes that I'm using for a race car. The problem is the brakes are not very good on it, I can't get any rear brake and not a great front brake. Actually, I'm not sure if the front brakes are bad, I just know that the car doesn't stop very well and I'm getting nothing from the rear. The back lines are fine, I've tried bleeding them, changed calipers and can get nothing. Is this just a bad master cylinder or is there something else I could try. There is only two lines coming out of the master cylinder and some funky line underneath that goes to ???. If it's a bad m.c. so be it, but is there maybe something I'm missing. any help greatly appreciated. thanks