I don't know of anyone that leases, but it's rather costly.
The initial payments will be lower than if you bought the car, but the first three years of a lease usually pays off the depreciation and then the buyout is at a predetermined rate. The overall cost, if you buy it out, will cost you more in the end or at least, full sticker value. If you don't buy it, you will have paid the depreciation for the Auto company and they in turn will put it on a lot at retail at the end of your lease.
Also remember, you will pay all taxes, title and registration fees for the entire term, as if you had actually owned it.
There are too many other TBird deals out there that could be negotiated and you would probably save money.
Good luck....