As above, I have found that some Original Lexus black or ivory carpet floor mats are still available to order for the 99-00 model IS200 ;)
Part numbers if anyone is interested :) are Black PZ410-C0355-BA, Ivory PZ410-C0355-BN.
There are currently two sets of each showing as UK stock with another set of black showing as available in the Belgium warehouse, further sets are showing as available from Japan but no quantities shown ;)
These are for Manual and Auto and retail for £56.80 + vat a set.
You can order these from your local dealer or from me with an LOC discount ;)
Cheers,
Andy