Well I'm most of the way done with this install myself. A few things I noticed or thought of.
Personally, I don't like the location in the original post, I feel like it may be too exposed to snow or water intake. I haven't received my wiper kit yet, but my plan is to relocate the washer fluid, or just not install it for now. Not to mention, the heater core location in the original post is where my 2nd battery will be. Apparently a lot of things want to occupy the same space
Be careful where you place your floor vents, the passenger side is almost to close to the wiring loom right there. I put it too far forward.
When removing my skid plates, I still had snow chunks pack from playing yesterday. Got me thinking about people saying that it doesn't put out great heat at idle. In my 4 seater, it's a pretty long run from front to back, I'm wondering if that's part of the reason the heat isn't great at idle. Before I install the hot side hose, I'm going to get some pipe insulation or at least another length of heater hose to try and retain heat on that long run from the engine all the way to the front of the machine.