Ok Manny Look here:
http://650bpalace.blogspot.com/
This is this guy's list of 650 b bikes:
Azonic Revenge
Bianchi SASS
Bianchi Oetzi Carbon 2009 (only quasi-moto)
BMC Team Elite 02, (2.1" and smaller)
Cannondale Prophet (2007+ checked)
Cannondale taurine
Cannondale F3
Carver 96er
Gary Fisher Fat Possum
Gary Fisher Tass.
Gunnar Ruffian (older with horizontal dropouts)
Haro Sonix LT
Haro Xeon
Haro Sonix VL120,(original Rear triangle) fits the Quasi Moto
Ibex Atlas
Ibis Mojo (2.1" and smaller recommended)
K2 Factory
K2 Apache 6.0
Kona Unit (with sliders)
KONA Coiler Series, (2007)
Kona
Marin Rift Zone
Marin Wolf Ridge 05/06
Mountain Cycle fury
Novarra Method
Surly 1x1, no confirmation but I'm sure the Pugsley would work too.
Salsa Ala Carte
Schwinn 01 Homegrown Ltd
Scott Spark 30
Sinister Ridge
Sinister Splinter FS
Specialized Enduro Elite (checked on 2007 model)
Specialized Myka
Specialized Carbon Epic, 2008
Specialized S-Works Carbon HT
Spooky Darkside
Soul Cycles Titan
Soul Cycles Icon
Soul Cycles Hooligan G2
Soma Groove (2.1" and smaller recommended)
Santa Cruz Chameleon, horizontal dropouts (2.1" and smaller recommended)
Santa Cruz Heckler
Santa Cruz Bullet
Santa Cruz BLT2
Trek 930/950/970 1999 fit the QUASI-MOTO
Ventana El Chamuco
VooDoo Bokor (newer with sliders)
VooDoo Wanga (newer with sliders)
VooDoo Sobo (2.1" and smaller tire recommended)