Thanks,It's been done; welder wrote on another forum (P94/P89 trigger swap pics added):
"Just finished putting a P949mm trigger in my P89. Wow, what a difference. I picked up the P94 trigger on Gunbroker for $14 while I was looking for a P95 trigger for the swap. None were offered so I thought I'd roll the dice and try the 94.
The P94 trigger has the same finger curve as the P95 but considerably more metal, although the link grove is already there on the 94. About an hour and a half, a couple files and some polishing afterwards and it's a go...."
"Stock P94 trigger on left, on right after a bit of hand machining."