On my 89 the 95 trigger dropped right in but it has the older swing link on the barrel. With a newer unit it may need minor releif.
To make the 89 trigger fit in the 95, it had to be ground out to let the guide rod seat properly.
The trigger does feel like the 89 trigger did. I like both and shoot both so it doesn't much matter to me. I did it more for fun than function.
I do think the 95 trigger looks better.
I have gone from 89 being my favorite to the 94 now. I have modded the 94s a little more.