I have several 55-56 and 57 front frame horns that I have cut off of frames for sale. Most are in great condition, and I know these are often damaged on frames. I cut them off by cutting the front crossmember, and leaving ALL of the inner brace in place. I cut them behind the first top rivet so you can use the rivet holes for alignment. I usually try to leave the "datum" hole in place that's under the a-arm. $50 each, or $90 a pair plus shipping.