I'm resurrecting a '71 240z, and discovered that the can on my brake booster has significant rust issues on the lower rear exterior. In search of a replacement booster, I'm finding that the early ('70-'71) rebuilt/reconditioned options are not available. I ordered one from the local parts store, and although the photo in their system was identical to mine, there are differences in the piece the supplier sent. The store manager did some searching and found that the one in the photo is not available. I checked with a few other suppliers and ran into the same issue. My question is, will a '73 240z booster work in my car? The can shape and dimensions are the same as mine, the only noticeable difference between the two units is that the rod that connects to the pedal on the early model has a smaller diameter shaft, and a clevis. The '73 booster has a larger (10m) thread with a nut, no clevis connector. It looks like the swap would work, and it would be easy to fab a connector for the larger rod, but I'd like some reassurance that the unit will work once I take the leap. There's a booster rebuild shop in my area, and I'm going to find out tomorrow if they can save my unit, but given the condition of the can, I'm not optimistic. Attached are a couple of photo's of the original booster.