Looking for a 1998 era Sun VME computer

I am the NASA radio manager at Kennedy Space Center and am in need of a power supply for a 1998 era Sun computer.  My request is not for home use so I hope this doesn't violate a policy of this email list.  The computer was re-badged by Motorola and sold as the "Zone Controller" in our two-way radio system.  The box is 19" wide by 32" tall 25" deep.  Ours is 16 port model containing two power supply cards (and two 115 VAC power plugs), two CPU cards, a DB15 connector for Ethernet (we use an adapter to convert to RJ45), a horizontal fan module, and several I/O cards.  Cards are inserted from the front and back of the computer.  It was originally made by the British telecom supplier "Integrated Micro Products" which Sun acquired in 1996.  Any leads are much appreciated!
T. William Merrill