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I believe I picked up the last complete exhaust system from Brantford Nissan and had installed years ago. I don't know if these helps you but here's are some photos I took. Very difficult to take under the car. It's from the stock 1972 240Z.

The design looks to me to be an attempt to allow the bearing cup on the end of the shifter to move in a more lateral motion to stay fully engaged in the shift rod head. The fixed pivot point of the Z shifter the bearing cup will move in an arc line, slightly pulling away from the shift rod head when not in neutral. I would have assumed this was accounted for in the design of the orig shifter and not have been enough to cause a problem. The movable pivot point on the latter resolves this by extending the radius line as it moves off neutral, but I would think at the same time in introduces more plastic wear surface into the entire mechanism, fine in the short run but likely to get loose with a lot of use. Engineers love to change things (star trek the motion picture).

Hi, here are some additional information of the exhaust system . Pictures from Fairlady-Z and Datsun 240Z service manual and service bulletin. We have 4 types of front pipe, #1 early manual trans #2 early auto trans #3 later manual trans #4 later auto trans The early type has a junction between dual pipes and single pipe, later type does not have it , just welded two pipes together. Kats

So you got it to start with starter fluid? Your life would be so much easier if you would take some measurements. I remember the old ways from the old days though, Filling my crankcase with gasoline as I cranked and cranked the engine with the "new" carb" that had no float valve, but I knew the carb was good, my friend gave it to me. Grinding the springs off of my new clutch disc because it was installed backward and I didn't want to take it off again, and I knew that wasn't the problem. Got a great workout though from removing and reinstalling the transmission about ten times. Good times man, good times.

Thanks kats, Those are some great photos. Though you are lucky to have found an original exhaust system. I have yet to come across any NOS piece of the exhaust system. I was ready to just go with the aftermarket reproductions at this point, though I'm not sure how good they are, or how close they are to the originals. I was told that the currently available ones have a rounded/stamped collector where the two downpipes meet, which was born out of "ease of manufacturing"- but to me, that seems a little half-assed.