Montreal upgrades for Ferrari, Williams and McLaren
Ferrari's F1 Formula One driver Fernando Alonso of Spain drives to the Monaco F1 Grand Prix May 27, 2012.
Spanish sports daily Marca said the new exhaust on Ferrari's car is a refined version of what the Italian team intended to debut on the F2012 at the start of the season.
Germany's Auto Motor und Sport said it is similar to McLaren's solution.
"How much better (it is) is difficult to say, we just need to try it," said Felipe Massa, who will back-to-back test the configuration alongside Fernando Alonso on Friday.
Over at Barcelona winner Williams' garage, a reportedly radical rear wing is ready to run.
"Especially in the activated DRS position," said Auto Motor und Sport, "it will bring more top speed."
McLaren's Montreal upgrade is comparatively minor, but it is designed to cut out troublesome pitstop errors.
It is the Mercedes, Red Bull and Ferrari-style 'nut-in-the-wheel' solution, which made its debut in the McLaren pit area only on the rear wheels in Monaco.
Reigning world champion Sebastian Vettel said on Thursday he thinks F1's top teams will soon stop the 'lottery' that has been seen so far in 2012.
"Perhaps Lewis Hamilton or even Michael Schumacher will win a race now," said the Red Bull driver, admitting an unprecedented seventh different winner could win the seventh race of 2012.
But he added: "I think the 'lottery' will stop here, or at the latest in Valencia. I don't think we are going to see 20 different winners," smiled Vettel.