Board Thread:Game Discussion/@comment-35997227-20190331000456/@comment-27464400-20190331073425

I would fully upgrade it as soon as possible. Do the math.

You will have to upgrade the car to a high level anyhow to win it since the final day of the SE is pretty tough.

A possible upgrade sales would be 30%. You would save 250-300 GC at the most. You get 150GC back from the ES.

A two-hour endurance race at Porsche short gives you more than 250,000 fame points (with the agent). Check the fame chart on this wiki so see how often you would level up.