I've installed them in several versions of the Ruger .22 auto pistol (MK1, II, III, plus 22/45's) The only fitting I've had to do is for the 22/45 by altering the top for clearance in the polymer frame.
If you can get a hold of a Marvel trigger you'll like the feel.
Thanks Bullseye, I have since been told Marvel no longer makes the trigger, so I may try and locate a used one. Once you installed the Marvel trigger, was there much lateral play?