[88911coupe]

Wrap up for the benefit of anyone else who may have to go through this complete PITA. After a lengthy talk with the parts guy at Autoscope here in Dallas we determined there is only one valid part # for this that is for the G50, however, I DO have a 4 magnet set up in my tranny, as did Cashman I think. I was told by one of the highly respected speedo guys (honestly trying to be helpful) that all are 8 magnets and if I am missing any magnets they fell off or something. In fact, there appear to be some with FOUR magnets. Note that this is not really an issue since my speedo is apparently set up to work with 4 magnets. The bigger problem others may run into is that the newer version of the sensor won't pick up the magnet "signal" UNLESS the sensor is only inserted about halfway into the tranny. Cashman returned one or two and maybe got lucky when he picked one up from a Porche dealer and, thankfully, his worked. I have no idea if it would only take me 2 or 3 tries to get one that worked so I fabricated a way to keep the sensor from inserting all the way into the hole with a piece of heater tube. Now it's registering the magnets fine but it's in now way a perfect solution...very kluge but I don't have any choice.
Just wanted to offer this suggestion in the event some other Pelican gets stuck in this situation. No way this should have dragged on for three weeks!