Kurt,

If you're in the US, the operation in Miami can hook you up.
http://www.pacscimiami.com/ You'll have to open a commercial account,
but once that was out of the way it was pretty painless.
Unfortunately, I don't have all of the part numbers handy any more, but
I think the buckle has it stamped on the back, and the ancillary items
are logically numbered.

Erik Mann (P3)