My prediction for the 2007 F1 season.
ING Renault - V-keel
Vodafone Mclaren - zero-keel(unsure)
Scuderia Ferrari - single-keel(unsure)
Honda - single-keel
BMW Sauber - zero-keel
Panasonic Toyota - zero-keel(unsure)
Red Bull - V-keel(unsure)
Spyker* - singlee-keel(unsure)
Super Aguri - single-keel(or they want to stick with the twin keel?)
Toro Rosso* - V-keel(possible)
AT&T Williams* - single-keel
*2006 suspension type unknown