After spending a couple of hours scouring the internet for a 987 shifter I was ready to order one from the UK to avoid the new import tarifs from the US when I found one a 20 minute drive from my place, for about $100 less.
When I compared the 2 shifters side by side I appreciated all the looseness in the original, the new one is very tight, like new.
Got it installed today using my homemade shifter holder...
(There are grooves on the bottom that fit into the shifter frame to position it.)
It isn't as precise as the plastic ones that you can buy but I made it to prevent the lever from flopping around during the installation.
A test drive proved that the new shifter worked as it should, I don't see a big improvement but I didn't really expect one, the transmission is getting a bit old... I still have some adjusting to do and the next test drive will be long enough to warm up the transition.