My be6 has a maximum multiplier of 12
so an FCPGA 1.2 is the fastest I am aware of in a non Tulatin
If you did the chip mod you could use a tulatin. which would increase the chances of a good FSB Over clock.
The be6 has fsb settings as 133 x 12 =1596 I believe the be6 goes to 160 fsb
good luck