Hey Lucky, Welcome to Net Tractor Talk. Sounds like you might have gotten real lucky if any of these guys with loaders are close to you.
Not sure about the specific ones you mentioned but I've seen oversized loaders on smaller tractors. They work okay but the problem is a big part of the capacity of the tractors lift capabilities are taken up by the heavier loader so your payload will not be as big as it could be. Depending on the work you are wanting to accomplish this might not be a big deal.
Good luck getting a loader setup for your tractor.