20 yrs or so ago I used to buy all the plows like yours from car dealers who bought plow trucks end of winter, they wouldn't sell trucks with plows so I'd give em 400, and keep the plow, pretty much all westerns too, I'd sell them in wheeler dealer paper for 800-1000 the next winter, I would do that 3-7 times a yr depending, could take a plow off in less than 2 hours, again that was 20 yrs ago, mostly on square body Chevy trucks but some on the same truck as yours
The western for your truck are simple