To convert a standard bomb into a Daisy Cutter, a thirty six inch extender pipe was used. One end was milled down and had external threads cut into it so it would screw into the end of the bomb. The other end had internal threads so the standard fuse would screw into it.
The same fuse was used for each version. The picture maddafinga posted is a good view of the fuse. The arming wire was clamped to the extender.
I have used brass tubing to simulate the extender. I then used very thin telephone wire strands to simulate the arming wire. Tape was used as clamps.
Berny
Phormer Phantom Phixer 
On the bench
TF-102A Delta Dagger, 32nd FIS, 54-1370, 1/48 scale. Monogram Pro Modeler with C&H conversion.
Revell F-4E Phantom II 33rd TFW, 58th TFS, 69-260, 1/32 scale.
Tamiya F-4D Phantom II, 13th TFS, 66-8711, 1/32 scale. F-4 Phantom Group Build.