McLaren and Mercedes look set to emulate the unique low-mounted engine exhaust layout of Red Bull's successful 2010 car design.
The RB6 has proven the most competitive chassis during the first part of the 2010 season and it has emerged that Ferrari's Valencia-spec upgrade features similar low-mounted engine exhausts.
Rival engineers also believe the layout, pioneered by Adrian Newey, allows air to be channelled more efficiently into the downforce-producing double diffuser. The system is believed to be worth up to half a second per lap.
"We have a reasonably big upgrade that we are fighting to have for Silverstone, and if that is there then I would be disappointed if it is not a much bigger step than that," said McLaren team boss Martin Whitmarsh.
Mercedes GP chief executive Nick Fry also admitted that the team is keen on implementing the system seen on the Red Bull and it could be in place as soon as this weekend's European Grand Prix at Valencia.
"If we can get both of those things on the car then we'll be in a lot better position," said Fry.
Team boss Ross Brawn also admitted that the system is likely to make a more widespread appearance over the next few races.
"I know that everyone is looking with interest at their exhaust system," confirmed Brawn.
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