Yes, 4 Hella 4000's will fit on a Ford or KCHilites bar. I have two euro patterns inboard and 2 cornering patterns outbord. There is about 1/4" gap between the lights, although each light is aimed slightly outward. I didn't need to mod the bar to fit the lights. The Ford bar is built by KCHilites. KC has been selling their own version that is identical, but has KC smilies on the sideplates and may be found cheaper.
A floor jack or HiLift will be helpful during install. Has a nice flat black powder coat compared to the Ford version. Time will tell about the rust complaints that the Ford version seems to have.