"I trained and prepared hard for Sepang but unfortunately I did not get off the mark. So my target for the Brazilian Grand Prix is to take the chequered flag and bring points to the team and looking at the way the car ran strongly with Ralph in Malaysia, I know I can get both jobs done." Two weeks before the Grand Prix, the FIA announced drivers would no longer be granted dispensation to compete in Formula One races without wearing a HANS device. It stated any competitor who could not wear a HANS device for medical reasons would be barred from driving in future events. This stance was ratified at a meeting of the FIA World Motor Sport Council in Paris on 2 April. Minardi driver Justin Wilson was passed fit by the FIA medical delegate Sid Watkins to take part in the event. At the previous race, Wilson suffered from pain in his shoulders which was caused by a loose HANS device and seat belt, causing him to move about freely in his car's cockpit and pinching a nerve that paralysed both his arms. Wilson visited the team's headquarters in Faenza, Italy to test a twin seat belt system installed in his car to prevent a similar occurrence. Barrichello, who had a minor hernia and received dispensation from the stewards not to wear a HANS device for medical reasons, was at risk of being dropped for the race in the event a solution to his discomfort was not found. He tested a new HANS device during free practice and reported no discomfort, leaving the services of the Ferrari reserve driver Felipe Massa unneeded. A total of ten teams (each represented by a different constructor) entered two race drivers each for the race with no changes from the season entry list. Some teams made changes to their vehicles for the event. Williams installed a revised gearbox unit and rear suspension bracket designed specially for the FW25. The team also fitted a revised specification of front wing, modified a terminal section of the car's bodywork and rectified a rear wing issue. The Ferrari and Renault teams introduced new specifications of rear wing: Ferrari's wing changes featured semi-circular holes in the outer part of its main profile to limit vortex and was used solely by Barrichello. Renault adopted a rear wing characterised by a sinuous shape of its profiles, which was