Lost my Lamborghini Hurácan LP620-2 Super Trofeo and Ferrari 312 P after reinstalling my account

I had some issues with Xbox Live services and was forced to remove my account from my Xbox and reinstall it again. The issues where solved but after a 20 minute wait for my Forza 6 data to sync, I had lost both my Lamborghini Hurácan Super Trofeo bonus car and my Ferrari 312 P along with a day or 2 of data (which doesn’t bother me much as I spent most of my money on random cars), which was pretty annoying as I drove the Hurácan ST a lot. I’m hoping there is a way for me to get them back, as I tried hard to get them, and it would be a shame to not drive either car again.