Try these links: <a href="http://www.brockracing.com/Instructions/S13-PAIR.htm">Brock PAIR Valve Mod<a> or <a href="http://home.tiscali.nl/hayabusaclubholland/fsj/mod_airbox.html">Fast Sjonny's PAIR Valve Mod<a>
Here's a board thread <a href="http://www.hayabusa.org/cgi-bin/busa/ikonboard.cgi?act=ST;f=6;t=13265;hl=pair+valve+mod ">PAIR Valve Thread<a>
BigBS
2003 Black/Grey Hayabusa (Baby J)
2003 Space Black Hayabusa LE (Midnight)
2008 Black/Grey Hayabusa (Isadora) (Stolen 22 Jul 09)