Talk:Shelby Cobra 427/@comment-122.166.175.48-20170228133703/@comment-30294077-20170228135029

I would like to know this also. I believe the cheapest way is to upgrade a lot of cars to Mastery 12 (approx 5-5-5-5 2-2-2-2) since you would have to max pro the cars and use a lot of engine cards to get anymore licenses, from Mastery 15.