A bit of a long-shot, but does anyone have one of these lying around,
gathering dust? I've got one already, but I need a second in order to
recommission a dual-processor machine into a new case (and the current
heatsinks won't do it).

This heatsink for an Athlon XP/MP and it looks like this:
http://www.overclockers.com/articles350/

My motherboard is the same as this one, in fact, so I'll have to cut them
down as described, but you can leave me to worry about that: ;)
http://jrv.oddones.org/athlon.html

Not worried about the fan, or the fan-hanger or any of that gubbins - just
need the heatsink itself.

Email address works, thanks in advance for any offers,

Stroller.