front brakes locked up ??

Just restored a 1976 duster put all new pre- bent brake lines on it and new flex hoses all around and replaced one front caliper the pads and rotors were in great shape. Bled the brakes and now the two front wheels are locked up, tried removing the lines from the master cyl and they were still locked up and removed the flex line from the calipers and they remained locked up but pistons can be pushed back with a pry bar. Could the problem be the master cylinder ? it points toward the calipers but its both of them one brand new and one old ??

Any help would be great
Thanks