Doing some brake work on my 1951 and find the brake block (on the frame) has a stripped out fitting from the master cylinder. NAPA does not have - can't find it in Jim Carters, Chevys of the 40's, or any place else. This block bolts through the frame using a 3/4 nut. Keeps the lines very secure. Any recommendations? Junk Yard? Thanks, BW