acmi
No doubt, in an open market, a second hand F would be snapped up before the potential buyer committed to an SF conversion unless, of course, he already had surplus pax aircraft that he couldn't otherwise sell. But likelihood is that there'll be enough demand to go round - Boeing cargo forecast suggests that 497 converted large (MD11 and up) freighters needed over next 20 years and I see that IAI reckon that they'll convert some 250 units themselves leaving aside what Boeing might do.