I'm told by an English seller of Porsche shortshift kits that my
shifter isn't Porsche. Thanks, Sportswagenservice Jacobi in
Hamminkeln, Germany, who sold it as matching my G50 trans. Just as
well they sent me a G50/50 by accident in compensation!

So... it looks like I need a stock shifter for my van, and it needs
to be the right one to fit the 1989-only G50/50 (I don't know whether
another year or nonturbo G50 shifter will work with my trans).

THEN I can try to find a short-shift kit for it, or make one.

Heck, I don't even know the model number of the car the trans is
from... "911" it won't be!