Honda RA107B
Plans had been revealed by the Honda team that they would introduce a B-Spec chassis in the middle of the season. Sources stated that the new chassis would incorporate a longer wheel-base like the Ferrari F2007 and improved sidepods and air fluxation units. Sources said the team planned to replace the narrow front nose with a more efficient, wider nose and front wing. All of these sources were proved to be incorrect, however, and visible changes were limited to the front suspension along with a differently-shaped airbox. The car was introduced at the French GP and did not prove to be much of an improvement although it allowed Button to score his and Honda's first point.
The B-Spec Chassis was expected to form the basis of the 2008 car but were never released. They planned to make major changes with the new front wings, additional winglets on the sidepods to try to create more mechanical grip and aerodynamic force & forward & main rear bargeboards. However it turned out they did not bring any improvement to the car, and the team decided against using them in 2008.
During testing at Spain, test driver Christian Klien's RA107 was run with a set of large winglets towards the front of the car, arched at a high vertical angle and giving the appearance of elephant ears. The winglets were not used on the RA107 in races, although a modified version appeared on its successor, the RA108, at the Spanish Grand Prix.
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