Installed a Wevo PSJ in my '87 3.2 Carrera this weekend, night and day difference! I'm waiting on a backordered Wevo short shifter kit too but wanted to report the immediate difference felt in the PSJ alone. Definitely a worthwhile upgrade if you're interested.
I had trouble finding info specific to the G50 installation. I stumbled on this thread where the OP wanted additional install info. Something I hadn't seen mentioned in any other thread is to start the project with transmission in 1st gear, then shift to 2nd gear once you have unbolted the coupler. This affords enough room to remove the coupler. I was stuck at this step for longer than I would like to admit this weekend
This morning I found
this Pelican article which would have been a huge help. It is written for the 915 transmission but is still useful for tips for a G50.
Still in awe of how sorted shifting feels with the PSJ alone. Thanks to everyone's posts that helped me get it done yesterday, hopefully this post helps another G50 owner down the line.