[Travis McGee]

Terrorist would not even need an ex-soviet "Suitcase Nuke".

Any ex-soviet nuclear artillery shell would do.

Stripped to only the "physics package", they could be as small as 8"D X 30" long, and weigh under 50 pounds.

[Poohbah]

Travis, the problem is that the whole mess is designed as an integrated system--you'd need to be able to remove the fusing system (which is based on the shell revolving along its long axis so many times), then find a way to hotwire the detonator so that it will function without the appropriate signal from the fuse.

What you'd wind up with is a device that would literally be ready to detonate as soon as you finished playing with the wiring. Trying to turn it off would be just as likely to arm it as not. Watch Manhattan Project with John Lithgow for an idea what's likely to happen with amateur work on a nuke...the bad guys are likely to have an unscheduled nuclear test somewhere in Central Asia.

And Seinfeld's Martyrdom Nazi would announce: "No virgins for you."