I have a S&W 442 Performance Center Pro Series in .38SPL, and I want to reduce the trigger pull on it.
Link to the exact 442 Model I have.

When looking at kits from Apex, Wilson, and Wolf - I don't see this model listed as one that their kits fit.
Example for Wilson kit at Midway.

Is it considered a J-Frame?  I'm wondering if any J-Frame kit will work with it, or if there are specific differences for the 442.

Can anyone point me to a specific link for a set of springs that will work for the 442?

That model is a J frame.  I recently used a Wilson Combat kit on my 340PD and did some polishing on the inside of the frame where the rebound slide rides, the rebound slide itself, parts of the trigger, hammer, hand, cylinder stop and sideplate.  Night and day difference.  Even my girlfriend noticed the difference and she doesn't use this reveolver regularly.

Thanks very much!

Springs ordered!

apex did not work for my 340  but wilson works great