Talk:Euro Supercar Duel/@comment-217.42.29.177-20151209161014/@comment-193.2.9.116-20160315163738

Yes, you can. I only bought Mercedes SLS AMG and unlocked Redline:Origins without problems. I only upgraded one in each category (engine, drivetrain etc. - PR 39.8), but I don't think it's neccessary. I only did it because I struggled with 7.2 somewhat.