The one I am using in from the mid-90's 3.8L Taurus and has swept blades like the pictures from the above link. Its a 2-speed and you need a HD 60+AMP relay setup with as short as possible heavy gauge wire to the 12V+ source. Here's one of the threads in case you haven't seen it:
Taurus Cooling Fan Install
FYI after running mine all summer with great results, in my opinion the large shroud is just as important as the tremendous CFM these things flow.