I need to replace the rear wheel cylinders in my 71 240Z. The cylinders changed in the 72 - 73 time frame. The early wheel cylinders go for almost $200 where the later goes for less than $50. Has anybody used the later model in the early car? Here's a picture of the later model on the left and the early model on the right. The only difference I can see is the part where the bleeder valve stick through the back plate is taller and the soft brake line connection is 90 degrees vs angled  in the ear