I think I might have a problem with my ED lease.

I ordered an e46 330i around November 2004, and expect delivery on 3/17. In December 2004, the residual and money factors were 58% and 0.0012 for 15k/3yr. At that time, the dealer told me that I cannot lock in that rate since it's more than 60 days away from the delivery date.

Now, in Jan, BMW had the 3800 incentive, but the lease rates went to 53% and 0.0025 or 15k/3yr. It all works out roughly the same if I buy off the dealer lot, but it makes a big difference if I do ED, since I will not be able to get the $3800 incentive.

I just called the dealer, and the program has not changed in Feb. The dealer also informed me that my car has already been produced and it's too late to change the configuration of the vehicle (for instance, to a coupe, where the lease rates and money factors are 58% and 0.0008 for 15k/3yr)

What are my options at this point? The dealer is trying to reconfigure my deal to find me a coupe at this point. But if all else fails, can I just give up my deposit and walk away from the deal?

Thanks!