Board Thread:Game Discussion/@comment-26249703-20150718174332/@comment-26715739-20150722115953

I have some slightly different numbers at points but I've only done it "paper and pencil" (or excel sheet...) and using the info in the wiki (which might not be 100% correct in terms of required PR or upgrade value).

But for missing values:

Track Aces: I make the N430 the car to pick - cost of 88

Open Sky: Atom V8 - cost 86

Euro supercar duel & Grand Tourer Supremacy - SLS - because upgrading for Grand Tourer gets you Euro SuperCar

Race Spec Mas: 180

GT1 Grand Tour - use the Sumo that was upgraded for East/West Throwdown cost 67 (making it better than the Porsche because you get 2 series)

Masters of Speed/Racing Spirit: GTE costs 500 on my figures. If they ever re-release the 500 we'll have to change the advice re skipping that stage - because if you're going to have to upgrade anyway... (unfortunately it was only with introduction of Racing Spirit after that series that GTE became clearly best for upgrading).