I'll lean on your guys expertise again.
My 2005 350z came with no owners manual nor the aftermarket Kenwood touchscreen radio owners manual,etc.
If there wasn't 3 inches of snow/sleet on the streets I'd take the car to the local sound place, but I wonder if there is a way to identify the model # & get an owners manual.
So how do I identify this Kenwood model #. Thanks

You're talking about the aftermarket stereo? Other than just looking at pictures online and seeing which one matches up with yours, there will be a sticker or plate on the back of the head unit with model and serial number info.