For what is worth. I would not put a snow plow on anything thing that I thought much of. I plowed snow for a number of years at our local school district. That is one of the hardest things you can do to a truck. There are always hidden obstacles that you will find that will bend plow frames and rip mounting hardware off of the truck. You will learn to be a pretty good blacksmith and welder before it is all over.
If I was looking for a snowplow, I would find an old beat up 4x4 pickup That if you damaged it wouldn't be the end of the world. Snow plows are also susceptible for accumulating dents when you back up or slide into something as well. Lots of old pickups are available with snowplows already mounted on them.
Just my thoughts for what is worth.
Jim