Post screen shot or url of similar part.
Here's a real quick one I made up.
Oh THAT kind of agitator! LOL
Sure, just used the same part and changed the way the LOFT is created.
The straight bladed vane was created with two lofts. One for the blade using two sketches for the blade profile, and another to connect the blade base to the hub, also using two sketches/profiles.
The curved bladed vane was created with one loft using the three sketches. I also added a fillet to round the end of the blade.
That's the only real difference. If you compare the two part files you can see the process. You can tweak the dimensions as required to achieve different results.