just installed my new 1.7ghz Pentium M and pin modded it to 533fsb @ 2.23GHz
There is one C0 stepping you can buy, SL8BA, in a 1.7ghz.
Bought it used off ebay for $26.00 and it easily overclocks, doesnt even break a sweat at this speed. Why pay $200+ for a true 2.26 when you can spend less than $30.00 on one.