NFS Unbound EA Play Subscription items

Hello there!

EDIT: Ok I now started the game from disk and sadly found out that, as expected, all my EA Play cars were removed, including my beloved Nissan Skyline. I won't use this post to complain but want to ask instead to make myself sure: If I buy the standard Nissan Skyline GT-R V•Spec ingame, will I still get to use my upgrades? 

I'm now desperately in need of a A+ type car for the "The Grand" tournament so I would deeply appreciate it if my car upgrades would still be available when buying the standard GT-R version. Should be the same base car as the EA Play one.

Thank you in advance

Original post:

So I own an Xbox Series X since August and was subscribed to the Gamepass Ultimate and therefore EA Play as well.

I mostly played Need for Speed Unbound on there and now unsubscribed for this month due to not having enough time to warrant a subscription.

Nontheless, I still bought the game physically to play it whenever I want and haven't started it yet.

Though I read on the internet that I would lose my EA Play items I received ingame.

Is that true?

I loved playing with the Nissan Skyline that was included as a subscription bonus and would find it sad if I will lose access to that car now.

If I lose the car through being unsubscribed, okay. But I can buy the car (at least the model) normally in the game, right? Will I at least be able to keep the car upgrades I bought for it?

I mean it will be hard to now grind for money to buy all my precious EA Play cars back, but I really preferred my Skyline.

Thanks for your answers in advance. I will start the game probably tomorrow now that I own it, so it would still be cool if I could get an official answer before checking and not knowing how it works.