Seagate has a 181.6 Gig. Have no idea about the IBM drives.
<A HREF="http://www.seagate.com/cda/products/discsales/marketing/detail/0,1121,330,00.html" target="_new">http://www.seagate.com/cda/products/discsales/marketing/detail/0,1121,330,00.html</A>