No Luke! I can add a little to this. I am no gearbox guy either, but I do know enough to be dangerous. My US import came with a F4W71A type 4-speed, 3-piece, straight shifter transmission. I believe the synchros are Borg type. I just bought a FS5C71B type that was sold through Datsun Competition in the US as a "close ratio overdrive" 5-speed. It is part number 32010-N3130 and was last shown in the April '96 competition catalog. This same transmission appears in a RHD parts catalog fitting to the 260Z from 11-73 on and superceeding 32010-N3100. My transmission was described to me as having the "Porsche servo style synchros" and they are steel. The gear ratios are: 2.906 / 1.902 / 1.308 / 1.0 / 0.864 The transmission has a pin type shifter and the catalog shows them straight, not bent - I didn't get a shifter with my purchase. It has the internal female type driveshaft connection - the kind that lets all the oil run out on the floor - but it came with a nifty plug designed to fit. I'm told this plug is extremely rare. This transmission listed in the competition parts catalog for just under $1,500 in 1996. Hope this helps!