My son and I are trying to get a 70 GT on the road. We have had it off the road for two years...I don't know how long it was off the road by the PO. We've had the rotors turned and have installed rebuilt calipers but we get no fluid through the lines when we attempt to bleed the brakes. I thought it was a bad MC, so I disconnected the lines at the MC and I get fluid flowing from the MC when I press the brake pedal. I have attempted to blow air through the brake lines just to test if it flows freely but not luck with the air either. Do you think the lines need to be replaced? I've never done this before; do you run a new line from the MC all the way to each wheel?