I've never owned a manual window 5.0 althouth I would like to. The website
Search Results for " 0resto.com " might have this part or maybe google for foxbody repair parts would turn up a window crank. I have never actually seen one of these handles but maybe ford shared them with the standard taurus or tempo for those years and it could increase your chances of finding one in the junk yard. Make sure and find out why the handle broke in the first place, was it just plastic fatigue or did the window itself become wedged in its tracks and put stress on the crank causing it to break. Either way it is fixable.