The actions are fairly easy to put a trigger on, but you need the sear engagement pin of the correct height, witch ai'nt the same on all,
fx the timney is delivered with two heights, due to the variance in Mauser actions designs you might need the higher one, can't say for sure as i've not had a M96.
And in worst case you might have to use a file to slightly touch one of the lugs for the sear engagement, to get the safety to work properly.
Also depending on the trigger you choose, and you're stock inlet, you might have to make a slight touch to the inlet.
Fx the huber should be pretty much a drop in, in a standard stock, wether a more traditional Timney takes up a bit more room due to it's housing.
The best trigger you get for Mausers if you want a 2 stage trigger, with low pull weights, for target shooting is the Bix'n Andy, but they're rather expensive, and will need a bit of stock inletting.
If you want illustrations go look at mausercentral, or surplus rifle forums, and you should be able to find some.