CoopsII wrote:eichy wrote:What if the roles had been reversed at the 2003 Brazilian GP and
RALPH FIRMAN won instead of Fisichella?

No matter how hard I try I simply cannot imagine that one

I don't think Firman was capable of winning (see his qualifying performance Vs Fisichella) - had he been in Fisi's car and not suffered a suspension failure, he would have merely scuttled around slowly, sneaking into the points in the chaos of the final laps.
But if he does win, then presumably Jordan keep him on for 2004, as a race winner (even in the most ludicrous of circumstances), while Fisi moves to Sauber for the same reasons as in our timeline (unhappiness with Jordan and hope that Sauber would help him secure a move to Ferrari). Nick Heidfeld is presumably the unlucky party, not getting the tests that won him the seat in our time line. He possibly gets a job at McLaren as a test driver instead of de la Rosa, or moves to Le Mans/DTM. 2004, Firman and Pantano have a torrid season, neither scoring. Firman is dropped for Glock before the end of the season. For 2005 Jordan have an all new line up of Karthikeyan and Monteiro, as in our timeline.
So the key knock on here is Heidfeld quitting F1 early. A lot depends on whether he gets a job as a test driver, and where; if does go to McLaren, he consequently replaces Montoya on occasion in 2005 and 2006. This frees up his seat at Williams, which is won by Antonio Pizzonia. In 2006 when BMW move from Williams to Sauber, they will want a German driver. Heidfeld is still an option (though quite possiblytied to Mercedes), but equally I think that Glock (ex-BMW Junior Team member, fresh from being made best rookie of the 2005 Champ Car season), and at a push Markus Winkelhock or Nico Rosberg are options. I think that Glock could end up in the seat, alongside Jacques Villeneuve, whose contract BMW will honour. Kubica replaces Villeneuve when management lose their patience with him.
With Glock in F1, the 2007 GP2 season is won by Lucas di Grassi, which gets him the job at Toyota. When Toyota and BMW pull out in 2009, Virgin pick up Lucas di Grassi and Luca Filippi, Timo Glock stays on at BMW and is partnered with Fisi or Klien. Probably Klien for a single season, then Perez in for 2011.