Purchased DLC Cars not Free in "Find Cars"

I digitally downloaded the bundle for GoW and Forza 6 for Black Friday and Forza came with the 10 Year Anniversary car pack. Now I’ve come to notice that no matter what I do, Forza tells me that I already own these cars even though they are only able to be bought in the “Find Cars” (there is no ‘free cars’ tab to navigate to). I have done a hard reset, I have deleted and reinstalled the game along with the dlc (and deleted/reinstalled the dlc by itself) to no avail. Literally, no matter what I do the cars are only ever able to bought with credits and are not free. This is the same account that purchased the bundle as well, so that is not an issue. Please address this issue ASAP. This is on xbox one.

***Edit
Its been 3 days and the cars have not appeared to be free even after some time. Definitely confused by this.