Rob, you may do about anything you want with the grader blade other than I would prefer that you don't take a torch or saw to it to get some of your left over metal that you might need for one of your other projects.

I'm sure that you could use a lot of that metal, and it was not intended to be a portable supply house.
As far as the make of that blade, I am not 100% sure.

The dealer that I bought them from, (I have 3, 2-7 footers & 1-5 footer) could not remember who he bought them from, he had had them for over 10 years.

Anyway, I had thought that they were early Road Boss graders, but I had a chance to talk to the owner of Road Boss 2 years ago at the World Ag Show. I described them in detail to him and he knew right off that they were not his but that they were Road Master graders and that they had long since gone out of business. They are close to a Road Boss, the differences being that the side panels on mine are about a foot longer, mine does not have bolt on wear plates on the runners,

(mine are welded on) and the hitch for the 3 pt is bolted on the Road Boss, (for shipping purposes) and mine is welded. I have not weighed it yet, but based on what that size Road Boss weighs, mine should be around 1600lbs.
As far as uses for this blade, they can be many. I have a road that had some big dips in it, 4-5 foot deep. I used the grader blade to fill them in. I can move about 2 cubic yards of dirt at a time with it if I want to. You would think that it would just flow out the back, but it doesn't if you don't want it to. It's all in how you operate the implement, and I suppose the type of and moisture content of the ground being worked helps. I think that a rear blade is the best blade for constructing a road other than a dozer with a six way blade. Then touch up with a box blade, moving dirt where it might need to be. It is easier to control the dirt with a box blade rather than the grader blade. Grade with the twin blade grader blade to remove wash boarding and unwanted bumps. Final dressing with a landscape rake. When finished, you have a road that is smooth and easily maintained. All of this applies to the ground and soil types and conditions that I have at my place. Other places include other steps to deal with different conditions.
Rob, please use the grader blade as often as you might think that it will work for you. Try different techniques with it, you may be surprised at what it can do. And as I had said when I brought it to you, I feel that it will not do a better job of grading on your road than you already do, just do it faster. Keep on using it, and keep us informed on if it works for you or not.
Good luck with everything and I will let you know when I have a chance to make it up there.