Board Thread:Game Discussion/@comment-28629811-20181121173755/@comment-35072544-20181122111100

You can find almost everything here on wiki - RR3 Wiki:Upgrades Strategy For 100% Completion - in the second half of the page is Endurance GT season 2017 with PR requirement and info what car to choose - well, the Porsche is cheaper to upgrade for 100% of the series, but AM has Exclussive series, so it's recommended to go his way..

And why do we have Porsche everywhere? Well, it's just about the contract, what FM have with the manufaturer. So it was maybe advantageous for both sides and for FM it's easier (and cheaper) to add new Porsche, than any other car..