rcmigpilot :Hello my friend...a little searching the web reveals that it is the F100D that was configured to carry centerline stores.the "D" model has a thickerwing airfoil,flaps,modified notch in the speed brake,enlarged fin and stab.Also has a weapons computor that allows the "dive toss" manuver to send the nuke on a six mile bye bye.So therefore depending on the speed brake the nuke could be used centerline.just a thought.thx.