Well I would be keeping that blade. It appears at first blush to be the early McCormick-Deering Leveling and Grader Blade which is not all that common as it was only made for w short period of time. There were issues with it, but there were good points as well. The issues were solved in the Cub-54
You can see the progression in the Cub Leveling and Grader Blade
in the CBI-1A Revision 12 Parts Catalog
Below is the page that shows the blade and blade support angle
If you examine your blade you can see the tell-tale rounded blade support angle. The newer versions are more angular. Looks like they modified it a lot
The rear mounting pads are interesting .. but the mid mount lift lever is more interesting. Seems to be a functional blade. Well worth keeping. With it modified this way the value has really decreased. Probably in half I would think.
Now for the hood. By anychance is the piece out of the hood with the tractor or is it missing? Even if it is missing a trashed donor hood would be a viable source for a patch which can be mig welded in quite nicely. Much of the rest of the tins look pretty good so I would be looking for a good donor hood for the patch.
A nice honest looking Cub in pretty good shape. The modified underslung is interesting and would be something I would be converting back to a vertical exhaust.
The Woods looks to be rather new and in very good condition. A nice mower.
I am not sure what you mean by no front hydraulics. The TC Reservoir is there, looks like the correct rockshaft for the reservoir assembly. What is missing is the rear rockshaft and the rockshaft rod but those are rather easy to obtain and not all that expensive. Those are parts I would be looking for
If you decide to revert to 6v you can get a genny or a 6v alternator. I didn't know they were available but I inherited a very nice one that will stay in my stock room until I decide which tractor it will go on.