I have one brand new aftermarket wheel cylinder. I got the wrong one for my '78 and installed it before I realized it was wrong so I couldn't return it. It fits in the rear axle, driver's side, front position. 1 1/8" bore with the banjo bolt fitting and not the flare. The adjuster has right hand thread. I believe this is compatible with pre '71. I paid $43 plus shipping and will let it go for $15 plus shipping from Reno, NV.