IMHO, this looks like a great swap for a truck. People have already done the swap and there's lots of info out there.
For the Fury, I'm not seeing as it would be a great swap. From looking at the pics, this isn't a simple bolt in. I'd say you are looking at doing some fabricating and welding. Getting the suspension to bolt up is one thing, getting it in there right is going to take some work and some thought.
If you are capable of doing that type of work, go for it... But I'd say that the more prudent route is to go ahead with your disc brake update. That is something that has been done by folks here with great success.
To me, it's a matter of getting the car done with a minimum of time and fuss. A few hours work and you are back on the road. Doing the suspension swap will involve pulling the stub frame (and engine etc.), doing some fabricating and then putting it all back together. It's not impossible, and to a lot of guys, it's not something outside their skills and amount of time available.
It's your choice and you know what you are capable of. Personally, I'd go for the disc brake swap and be done with it. You could be out driving the car and enjoying it rather than working on it.
BTW... W. Monroe.... NY state?