Product review (4 stars): A pretty easy to install unit
I had purchased a unique combination of Whirlpool refrigerator and Whirlpool freezer as separate but paired units.  I got them as display models and was pretty pleased with them, however there was no ice maker.  I worked pretty hard to find the right ice maker on the Whirlpool web site and then ordered this unit.  As always with Amazon, it arrived at my doorstep a couple days later.

I'd rate myself as moderately handy, so I was both looking forward to giving this a try, but also terrified that something might go wrong.  As it turned out, it was a pretty easy process.  First, the wiring to power the unit was already present behind the grill at the back of the freezer.  Second, the hole through which the icemaker fill spout passes was already present, covered with a plastic plate and screws.  Third, the mounting holes for the icemaker were already in the interior wall of the freezer, plugged with color-appropriate screws.  It took a little bit of creativity because the instructions apply to several Whirlpool fridge and freezer models, so if you give this a try, allow yourself some leeway to just find a way from point a to point b.  The critical things are pretty clear how they are to proceed.

I was fortunate to already have a water supply with shutoff behind the freezer.  I did have to purchase a line to connect from the supply valve to the freezer.  I got the braided type in a long length so I could easily pull the freezer from the wall to clean.

I would have happily rated the ice maker a five star rating, however I had a bit of difficulty with the fill spout inside the fridge.  While the instructions aren't explicit, it seems the spout is to direct water into a fill cup on the ice maker.  The spout was too long, so the water was pouring into the icemaker mechanism and then into the ice collecting tray.  The cubes were then cemented together with the excess water.  The spout is very thin plastic, so I carved an inch or so from the end, allowing the water to be directed appropriately.  Also, the instructions could use some improvement.

Just a hint - the freezer has to be cold enough to form ice before the ice maker starts up, so be patient for it to start working!

I'd recommend this unit, and I'd recommend installing or replacing icemakers as a pretty good homeowner project!