Forza member since Nov 2013 & just bought FM4 - will I get reward backlog?

[GandalfWhite659]

Found this in the link Noobertson sent

@HolyHa1fDead

UNOFFICIAL SUPPLEMENTARY FORZA REWARDS FAQ
Once I have redeemed my Rewards, how long do I have to claim them?

In Forza Motorsport 4 and Forza Horizon you have one month to read gift messages to get your reward. In Forza Motorsport 5 and Forza Horizon 2, gift messages remain in your Message Center until you have read them.

So I should be able to get a higher tier before FM6, but unlikely I’ll be able to place 300 cars in the FM4 garage.